Home / 1,715.18-2,571.35-674.73

Finding the Fourth Proportional to 1,715.18, 2,571.35 and 674.73

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Solution

The fourth proportional to 1,715.18, 2,571.35 and 674.73 is: 1,011.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.18 : 2,571.35 = 674.73 : x
  2. Step 2: Convert to fraction form
    1,715.18/2,571.35 = 674.73/x
  3. Step 3: Cross multiply
    1,715.18x = 2,571.35 × 674.73
  4. Step 4: Simplify right side
    1,715.18x = 1,734,963.61
  5. Step 5: Solve for x
    x = 1,734,963.61/1,715.18
  6. Step 6: Final answer
    x = 1,011.54

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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.