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Finding the Fourth Proportional to 8,731.44, 13,113.90 and 7,484.85

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Solution

The fourth proportional to 8,731.44, 13,113.90 and 7,484.85 is: 11,241.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,731.44 : 13,113.90 = 7,484.85 : x
  2. Step 2: Convert to fraction form
    8,731.44/13,113.90 = 7,484.85/x
  3. Step 3: Cross multiply
    8,731.44x = 13,113.90 × 7,484.85
  4. Step 4: Simplify right side
    8,731.44x = 98,155,574.42
  5. Step 5: Solve for x
    x = 98,155,574.42/8,731.44
  6. Step 6: Final answer
    x = 11,241.63

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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.