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Finding the Fourth Proportional to 1,747.89, 2,621.42 and 514.97

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Solution

The fourth proportional to 1,747.89, 2,621.42 and 514.97 is: 772.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,747.89 : 2,621.42 = 514.97 : x
  2. Step 2: Convert to fraction form
    1,747.89/2,621.42 = 514.97/x
  3. Step 3: Cross multiply
    1,747.89x = 2,621.42 × 514.97
  4. Step 4: Simplify right side
    1,747.89x = 1,349,936.98
  5. Step 5: Solve for x
    x = 1,349,936.98/1,747.89
  6. Step 6: Final answer
    x = 772.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.