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Finding the Fourth Proportional to 8,637.58, 11,891.02 and 8,240.83

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Solution

The fourth proportional to 8,637.58, 11,891.02 and 8,240.83 is: 11,344.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.58 : 11,891.02 = 8,240.83 : x
  2. Step 2: Convert to fraction form
    8,637.58/11,891.02 = 8,240.83/x
  3. Step 3: Cross multiply
    8,637.58x = 11,891.02 × 8,240.83
  4. Step 4: Simplify right side
    8,637.58x = 97,991,874.35
  5. Step 5: Solve for x
    x = 97,991,874.35/8,637.58
  6. Step 6: Final answer
    x = 11,344.83

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.