Home / 3,493.76-4,821.48-1,921.90

Finding the Fourth Proportional to 3,493.76, 4,821.48 and 1,921.90

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Solution

The fourth proportional to 3,493.76, 4,821.48 and 1,921.90 is: 2,652.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.76 : 4,821.48 = 1,921.90 : x
  2. Step 2: Convert to fraction form
    3,493.76/4,821.48 = 1,921.90/x
  3. Step 3: Cross multiply
    3,493.76x = 4,821.48 × 1,921.90
  4. Step 4: Simplify right side
    3,493.76x = 9,266,402.41
  5. Step 5: Solve for x
    x = 9,266,402.41/3,493.76
  6. Step 6: Final answer
    x = 2,652.27

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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.