Home / 1,186.11-1,779.17-1,127.79

Finding the Fourth Proportional to 1,186.11, 1,779.17 and 1,127.79

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Solution

The fourth proportional to 1,186.11, 1,779.17 and 1,127.79 is: 1,691.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.11 : 1,779.17 = 1,127.79 : x
  2. Step 2: Convert to fraction form
    1,186.11/1,779.17 = 1,127.79/x
  3. Step 3: Cross multiply
    1,186.11x = 1,779.17 × 1,127.79
  4. Step 4: Simplify right side
    1,186.11x = 2,006,524.50
  5. Step 5: Solve for x
    x = 2,006,524.50/1,186.11
  6. Step 6: Final answer
    x = 1,691.69

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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.