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Finding the Fourth Proportional to 2,555.76, 3,527.10 and 1,560.78

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Solution

The fourth proportional to 2,555.76, 3,527.10 and 1,560.78 is: 2,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.76 : 3,527.10 = 1,560.78 : x
  2. Step 2: Convert to fraction form
    2,555.76/3,527.10 = 1,560.78/x
  3. Step 3: Cross multiply
    2,555.76x = 3,527.10 × 1,560.78
  4. Step 4: Simplify right side
    2,555.76x = 5,505,027.14
  5. Step 5: Solve for x
    x = 5,505,027.14/2,555.76
  6. Step 6: Final answer
    x = 2,153.97

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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.