Home / 3,543.96-4,890.30-1,972.20

Finding the Fourth Proportional to 3,543.96, 4,890.30 and 1,972.20

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Solution

The fourth proportional to 3,543.96, 4,890.30 and 1,972.20 is: 2,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.96 : 4,890.30 = 1,972.20 : x
  2. Step 2: Convert to fraction form
    3,543.96/4,890.30 = 1,972.20/x
  3. Step 3: Cross multiply
    3,543.96x = 4,890.30 × 1,972.20
  4. Step 4: Simplify right side
    3,543.96x = 9,644,649.66
  5. Step 5: Solve for x
    x = 9,644,649.66/3,543.96
  6. Step 6: Final answer
    x = 2,721.43

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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.