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Finding the Fourth Proportional to 2,679.84, 4,017.60 and 1,037.76

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Solution

The fourth proportional to 2,679.84, 4,017.60 and 1,037.76 is: 1,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,679.84 : 4,017.60 = 1,037.76 : x
  2. Step 2: Convert to fraction form
    2,679.84/4,017.60 = 1,037.76/x
  3. Step 3: Cross multiply
    2,679.84x = 4,017.60 × 1,037.76
  4. Step 4: Simplify right side
    2,679.84x = 4,169,304.58
  5. Step 5: Solve for x
    x = 4,169,304.58/2,679.84
  6. Step 6: Final answer
    x = 1,555.80

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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.