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Finding the Fourth Proportional to 8,649.98, 12,974.97 and 2,807.18

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Solution

The fourth proportional to 8,649.98, 12,974.97 and 2,807.18 is: 4,210.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.98 : 12,974.97 = 2,807.18 : x
  2. Step 2: Convert to fraction form
    8,649.98/12,974.97 = 2,807.18/x
  3. Step 3: Cross multiply
    8,649.98x = 12,974.97 × 2,807.18
  4. Step 4: Simplify right side
    8,649.98x = 36,423,076.28
  5. Step 5: Solve for x
    x = 36,423,076.28/8,649.98
  6. Step 6: Final answer
    x = 4,210.77

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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.