Home / 1,177.18-1,631.95-1,114.78

Finding the Fourth Proportional to 1,177.18, 1,631.95 and 1,114.78

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Solution

The fourth proportional to 1,177.18, 1,631.95 and 1,114.78 is: 1,545.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.18 : 1,631.95 = 1,114.78 : x
  2. Step 2: Convert to fraction form
    1,177.18/1,631.95 = 1,114.78/x
  3. Step 3: Cross multiply
    1,177.18x = 1,631.95 × 1,114.78
  4. Step 4: Simplify right side
    1,177.18x = 1,819,265.22
  5. Step 5: Solve for x
    x = 1,819,265.22/1,177.18
  6. Step 6: Final answer
    x = 1,545.44

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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 (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.