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Finding the Fourth Proportional to 3,149.78, 4,724.67 and 1,698.16

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Solution

The fourth proportional to 3,149.78, 4,724.67 and 1,698.16 is: 2,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.78 : 4,724.67 = 1,698.16 : x
  2. Step 2: Convert to fraction form
    3,149.78/4,724.67 = 1,698.16/x
  3. Step 3: Cross multiply
    3,149.78x = 4,724.67 × 1,698.16
  4. Step 4: Simplify right side
    3,149.78x = 8,023,245.61
  5. Step 5: Solve for x
    x = 8,023,245.61/3,149.78
  6. Step 6: Final answer
    x = 2,547.24

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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.