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Finding the Fourth Proportional to 8,001.80, 12,002.70 and 7,455.05

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Solution

The fourth proportional to 8,001.80, 12,002.70 and 7,455.05 is: 11,182.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,001.80 : 12,002.70 = 7,455.05 : x
  2. Step 2: Convert to fraction form
    8,001.80/12,002.70 = 7,455.05/x
  3. Step 3: Cross multiply
    8,001.80x = 12,002.70 × 7,455.05
  4. Step 4: Simplify right side
    8,001.80x = 89,480,728.64
  5. Step 5: Solve for x
    x = 89,480,728.64/8,001.80
  6. Step 6: Final answer
    x = 11,182.58

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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.