Home / 3,101.85-4,650.74-1,127.11

Finding the Fourth Proportional to 3,101.85, 4,650.74 and 1,127.11

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Solution

The fourth proportional to 3,101.85, 4,650.74 and 1,127.11 is: 1,689.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.85 : 4,650.74 = 1,127.11 : x
  2. Step 2: Convert to fraction form
    3,101.85/4,650.74 = 1,127.11/x
  3. Step 3: Cross multiply
    3,101.85x = 4,650.74 × 1,127.11
  4. Step 4: Simplify right side
    3,101.85x = 5,241,895.56
  5. Step 5: Solve for x
    x = 5,241,895.56/3,101.85
  6. Step 6: Final answer
    x = 1,689.93

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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.