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Finding the Fourth Proportional to 3,078.87, 4,248.92 and 1,752.72

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Solution

The fourth proportional to 3,078.87, 4,248.92 and 1,752.72 is: 2,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.87 : 4,248.92 = 1,752.72 : x
  2. Step 2: Convert to fraction form
    3,078.87/4,248.92 = 1,752.72/x
  3. Step 3: Cross multiply
    3,078.87x = 4,248.92 × 1,752.72
  4. Step 4: Simplify right side
    3,078.87x = 7,447,158.30
  5. Step 5: Solve for x
    x = 7,447,158.30/3,078.87
  6. Step 6: Final answer
    x = 2,418.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.