Home / 9,140.58-12,620.14-8,512.76

Finding the Fourth Proportional to 9,140.58, 12,620.14 and 8,512.76

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Solution

The fourth proportional to 9,140.58, 12,620.14 and 8,512.76 is: 11,753.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.58 : 12,620.14 = 8,512.76 : x
  2. Step 2: Convert to fraction form
    9,140.58/12,620.14 = 8,512.76/x
  3. Step 3: Cross multiply
    9,140.58x = 12,620.14 × 8,512.76
  4. Step 4: Simplify right side
    9,140.58x = 107,432,233.25
  5. Step 5: Solve for x
    x = 107,432,233.25/9,140.58
  6. Step 6: Final answer
    x = 11,753.33

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.