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Finding the Fourth Proportional to 3,340.64, 4,982.74 and 3,147.92

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Solution

The fourth proportional to 3,340.64, 4,982.74 and 3,147.92 is: 4,695.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.64 : 4,982.74 = 3,147.92 : x
  2. Step 2: Convert to fraction form
    3,340.64/4,982.74 = 3,147.92/x
  3. Step 3: Cross multiply
    3,340.64x = 4,982.74 × 3,147.92
  4. Step 4: Simplify right side
    3,340.64x = 15,685,266.90
  5. Step 5: Solve for x
    x = 15,685,266.90/3,340.64
  6. Step 6: Final answer
    x = 4,695.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.