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Finding the Fourth Proportional to 1,840.79, 2,761.17 and 744.86

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Solution

The fourth proportional to 1,840.79, 2,761.17 and 744.86 is: 1,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,840.79 : 2,761.17 = 744.86 : x
  2. Step 2: Convert to fraction form
    1,840.79/2,761.17 = 744.86/x
  3. Step 3: Cross multiply
    1,840.79x = 2,761.17 × 744.86
  4. Step 4: Simplify right side
    1,840.79x = 2,056,671.28
  5. Step 5: Solve for x
    x = 2,056,671.28/1,840.79
  6. Step 6: Final answer
    x = 1,117.28

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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.