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Finding the Fourth Proportional to 1,975.55, 2,725.11 and 1,276.92

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Solution

The fourth proportional to 1,975.55, 2,725.11 and 1,276.92 is: 1,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,975.55 : 2,725.11 = 1,276.92 : x
  2. Step 2: Convert to fraction form
    1,975.55/2,725.11 = 1,276.92/x
  3. Step 3: Cross multiply
    1,975.55x = 2,725.11 × 1,276.92
  4. Step 4: Simplify right side
    1,975.55x = 3,479,747.46
  5. Step 5: Solve for x
    x = 3,479,747.46/1,975.55
  6. Step 6: Final answer
    x = 1,761.41

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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.