Home / 3,221.61-4,458-2,748.79

Finding the Fourth Proportional to 3,221.61, 4,458 and 2,748.79

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Solution

The fourth proportional to 3,221.61, 4,458 and 2,748.79 is: 3,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.61 : 4,458 = 2,748.79 : x
  2. Step 2: Convert to fraction form
    3,221.61/4,458 = 2,748.79/x
  3. Step 3: Cross multiply
    3,221.61x = 4,458 × 2,748.79
  4. Step 4: Simplify right side
    3,221.61x = 12,254,105.82
  5. Step 5: Solve for x
    x = 12,254,105.82/3,221.61
  6. Step 6: Final answer
    x = 3,803.72

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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.