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Finding the Fourth Proportional to 2,340.40, 3,229.80 and 1,346

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Solution

The fourth proportional to 2,340.40, 3,229.80 and 1,346 is: 1,857.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,340.40 : 3,229.80 = 1,346 : x
  2. Step 2: Convert to fraction form
    2,340.40/3,229.80 = 1,346/x
  3. Step 3: Cross multiply
    2,340.40x = 3,229.80 × 1,346
  4. Step 4: Simplify right side
    2,340.40x = 4,347,310.80
  5. Step 5: Solve for x
    x = 4,347,310.80/2,340.40
  6. Step 6: Final answer
    x = 1,857.51

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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.