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Finding the Fourth Proportional to 3,124.53, 4,310.55 and 1,943.55

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Solution

The fourth proportional to 3,124.53, 4,310.55 and 1,943.55 is: 2,681.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.53 : 4,310.55 = 1,943.55 : x
  2. Step 2: Convert to fraction form
    3,124.53/4,310.55 = 1,943.55/x
  3. Step 3: Cross multiply
    3,124.53x = 4,310.55 × 1,943.55
  4. Step 4: Simplify right side
    3,124.53x = 8,377,769.45
  5. Step 5: Solve for x
    x = 8,377,769.45/3,124.53
  6. Step 6: Final answer
    x = 2,681.29

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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.