Home / 5,125.27-7,688.90-2,005.15

Finding the Fourth Proportional to 5,125.27, 7,688.90 and 2,005.15

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Solution

The fourth proportional to 5,125.27, 7,688.90 and 2,005.15 is: 3,008.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.27 : 7,688.90 = 2,005.15 : x
  2. Step 2: Convert to fraction form
    5,125.27/7,688.90 = 2,005.15/x
  3. Step 3: Cross multiply
    5,125.27x = 7,688.90 × 2,005.15
  4. Step 4: Simplify right side
    5,125.27x = 15,417,397.84
  5. Step 5: Solve for x
    x = 15,417,397.84/5,125.27
  6. Step 6: Final answer
    x = 3,008.11

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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.