Home / 3,008.40-4,149.36-2,123.28

Finding the Fourth Proportional to 3,008.40, 4,149.36 and 2,123.28

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Solution

The fourth proportional to 3,008.40, 4,149.36 and 2,123.28 is: 2,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.40 : 4,149.36 = 2,123.28 : x
  2. Step 2: Convert to fraction form
    3,008.40/4,149.36 = 2,123.28/x
  3. Step 3: Cross multiply
    3,008.40x = 4,149.36 × 2,123.28
  4. Step 4: Simplify right side
    3,008.40x = 8,810,253.10
  5. Step 5: Solve for x
    x = 8,810,253.10/3,008.40
  6. Step 6: Final answer
    x = 2,928.55

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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.