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Finding the Fourth Proportional to 8,985.18, 13,484.15 and 7,251.18

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Solution

The fourth proportional to 8,985.18, 13,484.15 and 7,251.18 is: 10,881.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.18 : 13,484.15 = 7,251.18 : x
  2. Step 2: Convert to fraction form
    8,985.18/13,484.15 = 7,251.18/x
  3. Step 3: Cross multiply
    8,985.18x = 13,484.15 × 7,251.18
  4. Step 4: Simplify right side
    8,985.18x = 97,775,998.80
  5. Step 5: Solve for x
    x = 97,775,998.80/8,985.18
  6. Step 6: Final answer
    x = 10,881.92

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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.