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Finding the Fourth Proportional to 1,753.11, 2,640.06 and 1,560.87

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Solution

The fourth proportional to 1,753.11, 2,640.06 and 1,560.87 is: 2,350.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.11 : 2,640.06 = 1,560.87 : x
  2. Step 2: Convert to fraction form
    1,753.11/2,640.06 = 1,560.87/x
  3. Step 3: Cross multiply
    1,753.11x = 2,640.06 × 1,560.87
  4. Step 4: Simplify right side
    1,753.11x = 4,120,790.45
  5. Step 5: Solve for x
    x = 4,120,790.45/1,753.11
  6. Step 6: Final answer
    x = 2,350.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.