Home / 5,428.13-8,142.18-3,565.77

Finding the Fourth Proportional to 5,428.13, 8,142.18 and 3,565.77

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Solution

The fourth proportional to 5,428.13, 8,142.18 and 3,565.77 is: 5,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.13 : 8,142.18 = 3,565.77 : x
  2. Step 2: Convert to fraction form
    5,428.13/8,142.18 = 3,565.77/x
  3. Step 3: Cross multiply
    5,428.13x = 8,142.18 × 3,565.77
  4. Step 4: Simplify right side
    5,428.13x = 29,033,141.18
  5. Step 5: Solve for x
    x = 29,033,141.18/5,428.13
  6. Step 6: Final answer
    x = 5,348.65

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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.