Home / 4,221.58-5,822.45-3,938.63

Finding the Fourth Proportional to 4,221.58, 5,822.45 and 3,938.63

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Solution

The fourth proportional to 4,221.58, 5,822.45 and 3,938.63 is: 5,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.58 : 5,822.45 = 3,938.63 : x
  2. Step 2: Convert to fraction form
    4,221.58/5,822.45 = 3,938.63/x
  3. Step 3: Cross multiply
    4,221.58x = 5,822.45 × 3,938.63
  4. Step 4: Simplify right side
    4,221.58x = 22,932,427.44
  5. Step 5: Solve for x
    x = 22,932,427.44/4,221.58
  6. Step 6: Final answer
    x = 5,432.20

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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.