Home / 2,543.50-3,511.47-1,921.42

Finding the Fourth Proportional to 2,543.50, 3,511.47 and 1,921.42

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Solution

The fourth proportional to 2,543.50, 3,511.47 and 1,921.42 is: 2,652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.50 : 3,511.47 = 1,921.42 : x
  2. Step 2: Convert to fraction form
    2,543.50/3,511.47 = 1,921.42/x
  3. Step 3: Cross multiply
    2,543.50x = 3,511.47 × 1,921.42
  4. Step 4: Simplify right side
    2,543.50x = 6,747,008.69
  5. Step 5: Solve for x
    x = 6,747,008.69/2,543.50
  6. Step 6: Final answer
    x = 2,652.65

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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.