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Finding the Fourth Proportional to 2,503.97, 3,753.56 and 859.35

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Solution

The fourth proportional to 2,503.97, 3,753.56 and 859.35 is: 1,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503.97 : 3,753.56 = 859.35 : x
  2. Step 2: Convert to fraction form
    2,503.97/3,753.56 = 859.35/x
  3. Step 3: Cross multiply
    2,503.97x = 3,753.56 × 859.35
  4. Step 4: Simplify right side
    2,503.97x = 3,225,617.49
  5. Step 5: Solve for x
    x = 3,225,617.49/2,503.97
  6. Step 6: Final answer
    x = 1,288.20

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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.