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Finding the Fourth Proportional to 9,374.59, 13,979.20 and 9,290.20

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Solution

The fourth proportional to 9,374.59, 13,979.20 and 9,290.20 is: 13,853.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.59 : 13,979.20 = 9,290.20 : x
  2. Step 2: Convert to fraction form
    9,374.59/13,979.20 = 9,290.20/x
  3. Step 3: Cross multiply
    9,374.59x = 13,979.20 × 9,290.20
  4. Step 4: Simplify right side
    9,374.59x = 129,869,563.84
  5. Step 5: Solve for x
    x = 129,869,563.84/9,374.59
  6. Step 6: Final answer
    x = 13,853.36

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.