Home / 2,351.78-3,240.98-1,687.47

Finding the Fourth Proportional to 2,351.78, 3,240.98 and 1,687.47

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Solution

The fourth proportional to 2,351.78, 3,240.98 and 1,687.47 is: 2,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.78 : 3,240.98 = 1,687.47 : x
  2. Step 2: Convert to fraction form
    2,351.78/3,240.98 = 1,687.47/x
  3. Step 3: Cross multiply
    2,351.78x = 3,240.98 × 1,687.47
  4. Step 4: Simplify right side
    2,351.78x = 5,469,048.08
  5. Step 5: Solve for x
    x = 5,469,048.08/2,351.78
  6. Step 6: Final answer
    x = 2,325.50

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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.