Home / 5,127.82-7,691.74-1,665.07

Finding the Fourth Proportional to 5,127.82, 7,691.74 and 1,665.07

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Solution

The fourth proportional to 5,127.82, 7,691.74 and 1,665.07 is: 2,497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.82 : 7,691.74 = 1,665.07 : x
  2. Step 2: Convert to fraction form
    5,127.82/7,691.74 = 1,665.07/x
  3. Step 3: Cross multiply
    5,127.82x = 7,691.74 × 1,665.07
  4. Step 4: Simplify right side
    5,127.82x = 12,807,305.40
  5. Step 5: Solve for x
    x = 12,807,305.40/5,127.82
  6. Step 6: Final answer
    x = 2,497.61

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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.