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Finding the Fourth Proportional to 2,335.55, 3,223.13 and 1,340.80

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Solution

The fourth proportional to 2,335.55, 3,223.13 and 1,340.80 is: 1,850.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,335.55 : 3,223.13 = 1,340.80 : x
  2. Step 2: Convert to fraction form
    2,335.55/3,223.13 = 1,340.80/x
  3. Step 3: Cross multiply
    2,335.55x = 3,223.13 × 1,340.80
  4. Step 4: Simplify right side
    2,335.55x = 4,321,581.73
  5. Step 5: Solve for x
    x = 4,321,581.73/2,335.55
  6. Step 6: Final answer
    x = 1,850.35

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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.