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Finding the Fourth Proportional to 4,251.54, 6,374.54 and 1,478

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Solution

The fourth proportional to 4,251.54, 6,374.54 and 1,478 is: 2,216.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,251.54 : 6,374.54 = 1,478 : x
  2. Step 2: Convert to fraction form
    4,251.54/6,374.54 = 1,478/x
  3. Step 3: Cross multiply
    4,251.54x = 6,374.54 × 1,478
  4. Step 4: Simplify right side
    4,251.54x = 9,421,570.12
  5. Step 5: Solve for x
    x = 9,421,570.12/4,251.54
  6. Step 6: Final answer
    x = 2,216.04

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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.