Home / 7,421.19-10,239.57-4,436.55

Finding the Fourth Proportional to 7,421.19, 10,239.57 and 4,436.55

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Solution

The fourth proportional to 7,421.19, 10,239.57 and 4,436.55 is: 6,121.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.19 : 10,239.57 = 4,436.55 : x
  2. Step 2: Convert to fraction form
    7,421.19/10,239.57 = 4,436.55/x
  3. Step 3: Cross multiply
    7,421.19x = 10,239.57 × 4,436.55
  4. Step 4: Simplify right side
    7,421.19x = 45,428,364.28
  5. Step 5: Solve for x
    x = 45,428,364.28/7,421.19
  6. Step 6: Final answer
    x = 6,121.44

Related Problems

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Half scale
Find fourth proportional to 14,842.38, 20,479.14 and 8,873.10
Double scale
Find fourth proportional to 7,422.19, 10,240.95 and 4,437.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.