Home / 3,940.84-5,436.07-2,543.59

Finding the Fourth Proportional to 3,940.84, 5,436.07 and 2,543.59

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Solution

The fourth proportional to 3,940.84, 5,436.07 and 2,543.59 is: 3,508.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.84 : 5,436.07 = 2,543.59 : x
  2. Step 2: Convert to fraction form
    3,940.84/5,436.07 = 2,543.59/x
  3. Step 3: Cross multiply
    3,940.84x = 5,436.07 × 2,543.59
  4. Step 4: Simplify right side
    3,940.84x = 13,827,133.29
  5. Step 5: Solve for x
    x = 13,827,133.29/3,940.84
  6. Step 6: Final answer
    x = 3,508.68

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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.