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Finding the Fourth Proportional to 10,111.32, 15,166.98 and 3,951

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Solution

The fourth proportional to 10,111.32, 15,166.98 and 3,951 is: 5,926.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,111.32 : 15,166.98 = 3,951 : x
  2. Step 2: Convert to fraction form
    10,111.32/15,166.98 = 3,951/x
  3. Step 3: Cross multiply
    10,111.32x = 15,166.98 × 3,951
  4. Step 4: Simplify right side
    10,111.32x = 59,924,737.98
  5. Step 5: Solve for x
    x = 59,924,737.98/10,111.32
  6. Step 6: Final answer
    x = 5,926.50

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1.5x scale

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.