Home / 7,819.16-11,724.10-3,141.38

Finding the Fourth Proportional to 7,819.16, 11,724.10 and 3,141.38

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Solution

The fourth proportional to 7,819.16, 11,724.10 and 3,141.38 is: 4,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.16 : 11,724.10 = 3,141.38 : x
  2. Step 2: Convert to fraction form
    7,819.16/11,724.10 = 3,141.38/x
  3. Step 3: Cross multiply
    7,819.16x = 11,724.10 × 3,141.38
  4. Step 4: Simplify right side
    7,819.16x = 36,829,874.71
  5. Step 5: Solve for x
    x = 36,829,874.71/7,819.16
  6. Step 6: Final answer
    x = 4,710.21

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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.