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Finding the Fourth Proportional to 2,340.92, 3,230.06 and 1,721.40

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Solution

The fourth proportional to 2,340.92, 3,230.06 and 1,721.40 is: 2,375.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.92 : 3,230.06 = 1,721.40 : x
  2. Step 2: Convert to fraction form
    2,340.92/3,230.06 = 1,721.40/x
  3. Step 3: Cross multiply
    2,340.92x = 3,230.06 × 1,721.40
  4. Step 4: Simplify right side
    2,340.92x = 5,560,225.28
  5. Step 5: Solve for x
    x = 5,560,225.28/2,340.92
  6. Step 6: Final answer
    x = 2,375.23

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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.