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Finding the Fourth Proportional to 6,078.72, 9,118.08 and 1,974.72

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Solution

The fourth proportional to 6,078.72, 9,118.08 and 1,974.72 is: 2,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.72 : 9,118.08 = 1,974.72 : x
  2. Step 2: Convert to fraction form
    6,078.72/9,118.08 = 1,974.72/x
  3. Step 3: Cross multiply
    6,078.72x = 9,118.08 × 1,974.72
  4. Step 4: Simplify right side
    6,078.72x = 18,005,654.94
  5. Step 5: Solve for x
    x = 18,005,654.94/6,078.72
  6. Step 6: Final answer
    x = 2,962.08

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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.