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Finding the Fourth Proportional to 2,585.16, 3,877.73 and 761.16

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Solution

The fourth proportional to 2,585.16, 3,877.73 and 761.16 is: 1,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.16 : 3,877.73 = 761.16 : x
  2. Step 2: Convert to fraction form
    2,585.16/3,877.73 = 761.16/x
  3. Step 3: Cross multiply
    2,585.16x = 3,877.73 × 761.16
  4. Step 4: Simplify right side
    2,585.16x = 2,951,572.97
  5. Step 5: Solve for x
    x = 2,951,572.97/2,585.16
  6. Step 6: Final answer
    x = 1,141.74

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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.