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Finding the Fourth Proportional to 1,344.96, 1,854.88 and 879.36

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Solution

The fourth proportional to 1,344.96, 1,854.88 and 879.36 is: 1,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.96 : 1,854.88 = 879.36 : x
  2. Step 2: Convert to fraction form
    1,344.96/1,854.88 = 879.36/x
  3. Step 3: Cross multiply
    1,344.96x = 1,854.88 × 879.36
  4. Step 4: Simplify right side
    1,344.96x = 1,631,107.28
  5. Step 5: Solve for x
    x = 1,631,107.28/1,344.96
  6. Step 6: Final answer
    x = 1,212.76

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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.