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Finding the Fourth Proportional to 8,133.80, 12,200.70 and 2,587.10

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Solution

The fourth proportional to 8,133.80, 12,200.70 and 2,587.10 is: 3,880.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,133.80 : 12,200.70 = 2,587.10 : x
  2. Step 2: Convert to fraction form
    8,133.80/12,200.70 = 2,587.10/x
  3. Step 3: Cross multiply
    8,133.80x = 12,200.70 × 2,587.10
  4. Step 4: Simplify right side
    8,133.80x = 31,564,430.97
  5. Step 5: Solve for x
    x = 31,564,430.97/8,133.80
  6. Step 6: Final answer
    x = 3,880.65

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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.