Home / 7,479.22-10,321.39-4,122.15

Finding the Fourth Proportional to 7,479.22, 10,321.39 and 4,122.15

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Solution

The fourth proportional to 7,479.22, 10,321.39 and 4,122.15 is: 5,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.22 : 10,321.39 = 4,122.15 : x
  2. Step 2: Convert to fraction form
    7,479.22/10,321.39 = 4,122.15/x
  3. Step 3: Cross multiply
    7,479.22x = 10,321.39 × 4,122.15
  4. Step 4: Simplify right side
    7,479.22x = 42,546,322.94
  5. Step 5: Solve for x
    x = 42,546,322.94/7,479.22
  6. Step 6: Final answer
    x = 5,688.61

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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.