Home / 8,291.96-11,442.68-4,515.20

Finding the Fourth Proportional to 8,291.96, 11,442.68 and 4,515.20

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Solution

The fourth proportional to 8,291.96, 11,442.68 and 4,515.20 is: 6,230.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.96 : 11,442.68 = 4,515.20 : x
  2. Step 2: Convert to fraction form
    8,291.96/11,442.68 = 4,515.20/x
  3. Step 3: Cross multiply
    8,291.96x = 11,442.68 × 4,515.20
  4. Step 4: Simplify right side
    8,291.96x = 51,665,988.74
  5. Step 5: Solve for x
    x = 51,665,988.74/8,291.96
  6. Step 6: Final answer
    x = 6,230.85

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Half scale
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Double scale
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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.