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Finding the Fourth Proportional to 2,587.94, 3,881.40 and 739.04

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Solution

The fourth proportional to 2,587.94, 3,881.40 and 739.04 is: 1,108.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.94 : 3,881.40 = 739.04 : x
  2. Step 2: Convert to fraction form
    2,587.94/3,881.40 = 739.04/x
  3. Step 3: Cross multiply
    2,587.94x = 3,881.40 × 739.04
  4. Step 4: Simplify right side
    2,587.94x = 2,868,509.86
  5. Step 5: Solve for x
    x = 2,868,509.86/2,587.94
  6. Step 6: Final answer
    x = 1,108.41

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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.