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Finding the Fourth Proportional to 3,060.99, 4,591.40 and 869.72

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Solution

The fourth proportional to 3,060.99, 4,591.40 and 869.72 is: 1,304.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.99 : 4,591.40 = 869.72 : x
  2. Step 2: Convert to fraction form
    3,060.99/4,591.40 = 869.72/x
  3. Step 3: Cross multiply
    3,060.99x = 4,591.40 × 869.72
  4. Step 4: Simplify right side
    3,060.99x = 3,993,205.10
  5. Step 5: Solve for x
    x = 3,993,205.10/3,060.99
  6. Step 6: Final answer
    x = 1,304.55

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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.