Home / 6,143.40-9,216.45-1,982.70

Finding the Fourth Proportional to 6,143.40, 9,216.45 and 1,982.70

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Solution

The fourth proportional to 6,143.40, 9,216.45 and 1,982.70 is: 2,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.40 : 9,216.45 = 1,982.70 : x
  2. Step 2: Convert to fraction form
    6,143.40/9,216.45 = 1,982.70/x
  3. Step 3: Cross multiply
    6,143.40x = 9,216.45 × 1,982.70
  4. Step 4: Simplify right side
    6,143.40x = 18,273,455.42
  5. Step 5: Solve for x
    x = 18,273,455.42/6,143.40
  6. Step 6: Final answer
    x = 2,974.49

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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.