Home / 3,614.39-4,987.89-2,122.32

Finding the Fourth Proportional to 3,614.39, 4,987.89 and 2,122.32

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Solution

The fourth proportional to 3,614.39, 4,987.89 and 2,122.32 is: 2,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,614.39 : 4,987.89 = 2,122.32 : x
  2. Step 2: Convert to fraction form
    3,614.39/4,987.89 = 2,122.32/x
  3. Step 3: Cross multiply
    3,614.39x = 4,987.89 × 2,122.32
  4. Step 4: Simplify right side
    3,614.39x = 10,585,898.70
  5. Step 5: Solve for x
    x = 10,585,898.70/3,614.39
  6. Step 6: Final answer
    x = 2,928.82

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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.