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Finding the Fourth Proportional to 8,000.85, 12,001.28 and 4,102.77

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Solution

The fourth proportional to 8,000.85, 12,001.28 and 4,102.77 is: 6,154.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.85 : 12,001.28 = 4,102.77 : x
  2. Step 2: Convert to fraction form
    8,000.85/12,001.28 = 4,102.77/x
  3. Step 3: Cross multiply
    8,000.85x = 12,001.28 × 4,102.77
  4. Step 4: Simplify right side
    8,000.85x = 49,238,491.55
  5. Step 5: Solve for x
    x = 49,238,491.55/8,000.85
  6. Step 6: Final answer
    x = 6,154.16

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Half scale
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Double scale
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Similar ratio
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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.