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Finding the Fourth Proportional to 10,649.98, 15,974.97 and 4,078.18

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Solution

The fourth proportional to 10,649.98, 15,974.97 and 4,078.18 is: 6,117.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,649.98 : 15,974.97 = 4,078.18 : x
  2. Step 2: Convert to fraction form
    10,649.98/15,974.97 = 4,078.18/x
  3. Step 3: Cross multiply
    10,649.98x = 15,974.97 × 4,078.18
  4. Step 4: Simplify right side
    10,649.98x = 65,148,803.15
  5. Step 5: Solve for x
    x = 65,148,803.15/10,649.98
  6. Step 6: Final answer
    x = 6,117.27

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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.