Home / 2,543.40-3,818.70-1,996.20

Finding the Fourth Proportional to 2,543.40, 3,818.70 and 1,996.20

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Solution

The fourth proportional to 2,543.40, 3,818.70 and 1,996.20 is: 2,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.40 : 3,818.70 = 1,996.20 : x
  2. Step 2: Convert to fraction form
    2,543.40/3,818.70 = 1,996.20/x
  3. Step 3: Cross multiply
    2,543.40x = 3,818.70 × 1,996.20
  4. Step 4: Simplify right side
    2,543.40x = 7,622,888.94
  5. Step 5: Solve for x
    x = 7,622,888.94/2,543.40
  6. Step 6: Final answer
    x = 2,997.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.