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Finding the Fourth Proportional to 3,291.55, 4,937.55 and 1,039.89

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Solution

The fourth proportional to 3,291.55, 4,937.55 and 1,039.89 is: 1,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.55 : 4,937.55 = 1,039.89 : x
  2. Step 2: Convert to fraction form
    3,291.55/4,937.55 = 1,039.89/x
  3. Step 3: Cross multiply
    3,291.55x = 4,937.55 × 1,039.89
  4. Step 4: Simplify right side
    3,291.55x = 5,134,508.87
  5. Step 5: Solve for x
    x = 5,134,508.87/3,291.55
  6. Step 6: Final answer
    x = 1,559.91

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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.