Home / 10,411.16-15,617.76-3,390.86

Finding the Fourth Proportional to 10,411.16, 15,617.76 and 3,390.86

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Solution

The fourth proportional to 10,411.16, 15,617.76 and 3,390.86 is: 5,086.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,411.16 : 15,617.76 = 3,390.86 : x
  2. Step 2: Convert to fraction form
    10,411.16/15,617.76 = 3,390.86/x
  3. Step 3: Cross multiply
    10,411.16x = 15,617.76 × 3,390.86
  4. Step 4: Simplify right side
    10,411.16x = 52,957,637.67
  5. Step 5: Solve for x
    x = 52,957,637.67/10,411.16
  6. Step 6: Final answer
    x = 5,086.62

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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.