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Finding the Fourth Proportional to 2,543.88, 3,508.95 and 1,983.45

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Solution

The fourth proportional to 2,543.88, 3,508.95 and 1,983.45 is: 2,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.88 : 3,508.95 = 1,983.45 : x
  2. Step 2: Convert to fraction form
    2,543.88/3,508.95 = 1,983.45/x
  3. Step 3: Cross multiply
    2,543.88x = 3,508.95 × 1,983.45
  4. Step 4: Simplify right side
    2,543.88x = 6,959,826.88
  5. Step 5: Solve for x
    x = 6,959,826.88/2,543.88
  6. Step 6: Final answer
    x = 2,735.91

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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.