Home / 5,176.71-7,765.11-1,281.15

Finding the Fourth Proportional to 5,176.71, 7,765.11 and 1,281.15

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Solution

The fourth proportional to 5,176.71, 7,765.11 and 1,281.15 is: 1,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.71 : 7,765.11 = 1,281.15 : x
  2. Step 2: Convert to fraction form
    5,176.71/7,765.11 = 1,281.15/x
  3. Step 3: Cross multiply
    5,176.71x = 7,765.11 × 1,281.15
  4. Step 4: Simplify right side
    5,176.71x = 9,948,270.68
  5. Step 5: Solve for x
    x = 9,948,270.68/5,176.71
  6. Step 6: Final answer
    x = 1,921.74

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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.