Home / 3,212.12-4,432.72-1,867.92

Finding the Fourth Proportional to 3,212.12, 4,432.72 and 1,867.92

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Solution

The fourth proportional to 3,212.12, 4,432.72 and 1,867.92 is: 2,577.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.12 : 4,432.72 = 1,867.92 : x
  2. Step 2: Convert to fraction form
    3,212.12/4,432.72 = 1,867.92/x
  3. Step 3: Cross multiply
    3,212.12x = 4,432.72 × 1,867.92
  4. Step 4: Simplify right side
    3,212.12x = 8,279,966.34
  5. Step 5: Solve for x
    x = 8,279,966.34/3,212.12
  6. Step 6: Final answer
    x = 2,577.73

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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.