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Finding the Fourth Proportional to 10,363.50, 15,545.30 and 3,438

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Solution

The fourth proportional to 10,363.50, 15,545.30 and 3,438 is: 5,157.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,363.50 : 15,545.30 = 3,438 : x
  2. Step 2: Convert to fraction form
    10,363.50/15,545.30 = 3,438/x
  3. Step 3: Cross multiply
    10,363.50x = 15,545.30 × 3,438
  4. Step 4: Simplify right side
    10,363.50x = 53,444,724.21
  5. Step 5: Solve for x
    x = 53,444,724.21/10,363.50
  6. Step 6: Final answer
    x = 5,157.01

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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.