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Finding the Fourth Proportional to 1,344.24, 1,854.60 and 872.51

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Solution

The fourth proportional to 1,344.24, 1,854.60 and 872.51 is: 1,203.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.24 : 1,854.60 = 872.51 : x
  2. Step 2: Convert to fraction form
    1,344.24/1,854.60 = 872.51/x
  3. Step 3: Cross multiply
    1,344.24x = 1,854.60 × 872.51
  4. Step 4: Simplify right side
    1,344.24x = 1,618,147.77
  5. Step 5: Solve for x
    x = 1,618,147.77/1,344.24
  6. Step 6: Final answer
    x = 1,203.76

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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.