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Finding the Fourth Proportional to 3,187.84, 4,780.02 and 1,455.52

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Solution

The fourth proportional to 3,187.84, 4,780.02 and 1,455.52 is: 2,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.84 : 4,780.02 = 1,455.52 : x
  2. Step 2: Convert to fraction form
    3,187.84/4,780.02 = 1,455.52/x
  3. Step 3: Cross multiply
    3,187.84x = 4,780.02 × 1,455.52
  4. Step 4: Simplify right side
    3,187.84x = 6,957,414.71
  5. Step 5: Solve for x
    x = 6,957,414.71/3,187.84
  6. Step 6: Final answer
    x = 2,182.49

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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.