Home / 7,421.76-10,240.56-4,278.96

Finding the Fourth Proportional to 7,421.76, 10,240.56 and 4,278.96

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Solution

The fourth proportional to 7,421.76, 10,240.56 and 4,278.96 is: 5,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.76 : 10,240.56 = 4,278.96 : x
  2. Step 2: Convert to fraction form
    7,421.76/10,240.56 = 4,278.96/x
  3. Step 3: Cross multiply
    7,421.76x = 10,240.56 × 4,278.96
  4. Step 4: Simplify right side
    7,421.76x = 43,818,946.62
  5. Step 5: Solve for x
    x = 43,818,946.62/7,421.76
  6. Step 6: Final answer
    x = 5,904.12

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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.