Home / 8,221.50-11,347.70-4,686.76

Finding the Fourth Proportional to 8,221.50, 11,347.70 and 4,686.76

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Solution

The fourth proportional to 8,221.50, 11,347.70 and 4,686.76 is: 6,468.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.50 : 11,347.70 = 4,686.76 : x
  2. Step 2: Convert to fraction form
    8,221.50/11,347.70 = 4,686.76/x
  3. Step 3: Cross multiply
    8,221.50x = 11,347.70 × 4,686.76
  4. Step 4: Simplify right side
    8,221.50x = 53,183,937.20
  5. Step 5: Solve for x
    x = 53,183,937.20/8,221.50
  6. Step 6: Final answer
    x = 6,468.88

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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.