Home / 8,431.60-12,647.36-3,501.12

Finding the Fourth Proportional to 8,431.60, 12,647.36 and 3,501.12

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Solution

The fourth proportional to 8,431.60, 12,647.36 and 3,501.12 is: 5,251.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.60 : 12,647.36 = 3,501.12 : x
  2. Step 2: Convert to fraction form
    8,431.60/12,647.36 = 3,501.12/x
  3. Step 3: Cross multiply
    8,431.60x = 12,647.36 × 3,501.12
  4. Step 4: Simplify right side
    8,431.60x = 44,279,925.04
  5. Step 5: Solve for x
    x = 44,279,925.04/8,431.60
  6. Step 6: Final answer
    x = 5,251.66

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Half scale
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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.