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Finding the Fourth Proportional to 2,543.97, 3,510.99 and 1,549.40

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Solution

The fourth proportional to 2,543.97, 3,510.99 and 1,549.40 is: 2,138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.97 : 3,510.99 = 1,549.40 : x
  2. Step 2: Convert to fraction form
    2,543.97/3,510.99 = 1,549.40/x
  3. Step 3: Cross multiply
    2,543.97x = 3,510.99 × 1,549.40
  4. Step 4: Simplify right side
    2,543.97x = 5,439,910.35
  5. Step 5: Solve for x
    x = 5,439,910.35/2,543.97
  6. Step 6: Final answer
    x = 2,138.35

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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.