Home / 3,319.08-4,578.84-2,139.72

Finding the Fourth Proportional to 3,319.08, 4,578.84 and 2,139.72

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Solution

The fourth proportional to 3,319.08, 4,578.84 and 2,139.72 is: 2,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.08 : 4,578.84 = 2,139.72 : x
  2. Step 2: Convert to fraction form
    3,319.08/4,578.84 = 2,139.72/x
  3. Step 3: Cross multiply
    3,319.08x = 4,578.84 × 2,139.72
  4. Step 4: Simplify right side
    3,319.08x = 9,797,435.52
  5. Step 5: Solve for x
    x = 9,797,435.52/3,319.08
  6. Step 6: Final answer
    x = 2,951.85

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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.