Home / 3,129.52-4,319.04-2,081.92

Finding the Fourth Proportional to 3,129.52, 4,319.04 and 2,081.92

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Solution

The fourth proportional to 3,129.52, 4,319.04 and 2,081.92 is: 2,873.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.52 : 4,319.04 = 2,081.92 : x
  2. Step 2: Convert to fraction form
    3,129.52/4,319.04 = 2,081.92/x
  3. Step 3: Cross multiply
    3,129.52x = 4,319.04 × 2,081.92
  4. Step 4: Simplify right side
    3,129.52x = 8,991,895.76
  5. Step 5: Solve for x
    x = 8,991,895.76/3,129.52
  6. Step 6: Final answer
    x = 2,873.25

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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.