Home / 10,287.46-15,427.98-3,712.78

Finding the Fourth Proportional to 10,287.46, 15,427.98 and 3,712.78

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Solution

The fourth proportional to 10,287.46, 15,427.98 and 3,712.78 is: 5,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.46 : 15,427.98 = 3,712.78 : x
  2. Step 2: Convert to fraction form
    10,287.46/15,427.98 = 3,712.78/x
  3. Step 3: Cross multiply
    10,287.46x = 15,427.98 × 3,712.78
  4. Step 4: Simplify right side
    10,287.46x = 57,280,695.58
  5. Step 5: Solve for x
    x = 57,280,695.58/10,287.46
  6. Step 6: Final answer
    x = 5,568.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.