Home / 4,382.88-6,040-3,138.72

Finding the Fourth Proportional to 4,382.88, 6,040 and 3,138.72

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Solution

The fourth proportional to 4,382.88, 6,040 and 3,138.72 is: 4,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,382.88 : 6,040 = 3,138.72 : x
  2. Step 2: Convert to fraction form
    4,382.88/6,040 = 3,138.72/x
  3. Step 3: Cross multiply
    4,382.88x = 6,040 × 3,138.72
  4. Step 4: Simplify right side
    4,382.88x = 18,957,868.80
  5. Step 5: Solve for x
    x = 18,957,868.80/4,382.88
  6. Step 6: Final answer
    x = 4,325.44

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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.