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Finding the Fourth Proportional to 3,614.80, 4,969.12 and 3,258.40

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Solution

The fourth proportional to 3,614.80, 4,969.12 and 3,258.40 is: 4,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,614.80 : 4,969.12 = 3,258.40 : x
  2. Step 2: Convert to fraction form
    3,614.80/4,969.12 = 3,258.40/x
  3. Step 3: Cross multiply
    3,614.80x = 4,969.12 × 3,258.40
  4. Step 4: Simplify right side
    3,614.80x = 16,191,380.61
  5. Step 5: Solve for x
    x = 16,191,380.61/3,614.80
  6. Step 6: Final answer
    x = 4,479.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.