Home / 5,665.49-7,818.11-3,147.77

Finding the Fourth Proportional to 5,665.49, 7,818.11 and 3,147.77

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Solution

The fourth proportional to 5,665.49, 7,818.11 and 3,147.77 is: 4,343.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.49 : 7,818.11 = 3,147.77 : x
  2. Step 2: Convert to fraction form
    5,665.49/7,818.11 = 3,147.77/x
  3. Step 3: Cross multiply
    5,665.49x = 7,818.11 × 3,147.77
  4. Step 4: Simplify right side
    5,665.49x = 24,609,573.02
  5. Step 5: Solve for x
    x = 24,609,573.02/5,665.49
  6. Step 6: Final answer
    x = 4,343.77

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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.