Home / 3,614.40-4,988.34-2,728.80

Finding the Fourth Proportional to 3,614.40, 4,988.34 and 2,728.80

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Solution

The fourth proportional to 3,614.40, 4,988.34 and 2,728.80 is: 3,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,614.40 : 4,988.34 = 2,728.80 : x
  2. Step 2: Convert to fraction form
    3,614.40/4,988.34 = 2,728.80/x
  3. Step 3: Cross multiply
    3,614.40x = 4,988.34 × 2,728.80
  4. Step 4: Simplify right side
    3,614.40x = 13,612,182.19
  5. Step 5: Solve for x
    x = 13,612,182.19/3,614.40
  6. Step 6: Final answer
    x = 3,766.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.