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Finding the Fourth Proportional to 3,149.60, 4,721.30 and 1,763.60

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Solution

The fourth proportional to 3,149.60, 4,721.30 and 1,763.60 is: 2,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149.60 : 4,721.30 = 1,763.60 : x
  2. Step 2: Convert to fraction form
    3,149.60/4,721.30 = 1,763.60/x
  3. Step 3: Cross multiply
    3,149.60x = 4,721.30 × 1,763.60
  4. Step 4: Simplify right side
    3,149.60x = 8,326,484.68
  5. Step 5: Solve for x
    x = 8,326,484.68/3,149.60
  6. Step 6: Final answer
    x = 2,643.66

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1.5x scale

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.