Home / 9,678.09-14,517.17-2,658.21

Finding the Fourth Proportional to 9,678.09, 14,517.17 and 2,658.21

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Solution

The fourth proportional to 9,678.09, 14,517.17 and 2,658.21 is: 3,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.09 : 14,517.17 = 2,658.21 : x
  2. Step 2: Convert to fraction form
    9,678.09/14,517.17 = 2,658.21/x
  3. Step 3: Cross multiply
    9,678.09x = 14,517.17 × 2,658.21
  4. Step 4: Simplify right side
    9,678.09x = 38,589,673.17
  5. Step 5: Solve for x
    x = 38,589,673.17/9,678.09
  6. Step 6: Final answer
    x = 3,987.32

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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.