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Finding the Fourth Proportional to 6,560.28, 9,840.42 and 1,943.28

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Solution

The fourth proportional to 6,560.28, 9,840.42 and 1,943.28 is: 2,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,560.28 : 9,840.42 = 1,943.28 : x
  2. Step 2: Convert to fraction form
    6,560.28/9,840.42 = 1,943.28/x
  3. Step 3: Cross multiply
    6,560.28x = 9,840.42 × 1,943.28
  4. Step 4: Simplify right side
    6,560.28x = 19,122,691.38
  5. Step 5: Solve for x
    x = 19,122,691.38/6,560.28
  6. Step 6: Final answer
    x = 2,914.92

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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.