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Finding the Fourth Proportional to 3,326.76, 4,990.14 and 1,275.24

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Solution

The fourth proportional to 3,326.76, 4,990.14 and 1,275.24 is: 1,912.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.76 : 4,990.14 = 1,275.24 : x
  2. Step 2: Convert to fraction form
    3,326.76/4,990.14 = 1,275.24/x
  3. Step 3: Cross multiply
    3,326.76x = 4,990.14 × 1,275.24
  4. Step 4: Simplify right side
    3,326.76x = 6,363,626.13
  5. Step 5: Solve for x
    x = 6,363,626.13/3,326.76
  6. Step 6: Final answer
    x = 1,912.86

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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.