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Finding the Fourth Proportional to 2,753.53, 4,130.70 and 805.89

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Solution

The fourth proportional to 2,753.53, 4,130.70 and 805.89 is: 1,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.53 : 4,130.70 = 805.89 : x
  2. Step 2: Convert to fraction form
    2,753.53/4,130.70 = 805.89/x
  3. Step 3: Cross multiply
    2,753.53x = 4,130.70 × 805.89
  4. Step 4: Simplify right side
    2,753.53x = 3,328,869.17
  5. Step 5: Solve for x
    x = 3,328,869.17/2,753.53
  6. Step 6: Final answer
    x = 1,208.95

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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.