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Finding the Fourth Proportional to 6,153.40, 8,489.28 and 3,791.44

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Solution

The fourth proportional to 6,153.40, 8,489.28 and 3,791.44 is: 5,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,153.40 : 8,489.28 = 3,791.44 : x
  2. Step 2: Convert to fraction form
    6,153.40/8,489.28 = 3,791.44/x
  3. Step 3: Cross multiply
    6,153.40x = 8,489.28 × 3,791.44
  4. Step 4: Simplify right side
    6,153.40x = 32,186,595.76
  5. Step 5: Solve for x
    x = 32,186,595.76/6,153.40
  6. Step 6: Final answer
    x = 5,230.70

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