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Finding the Fourth Proportional to 1,132.26, 1,563.11 and 879.63

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Solution

The fourth proportional to 1,132.26, 1,563.11 and 879.63 is: 1,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.26 : 1,563.11 = 879.63 : x
  2. Step 2: Convert to fraction form
    1,132.26/1,563.11 = 879.63/x
  3. Step 3: Cross multiply
    1,132.26x = 1,563.11 × 879.63
  4. Step 4: Simplify right side
    1,132.26x = 1,374,957.57
  5. Step 5: Solve for x
    x = 1,374,957.57/1,132.26
  6. Step 6: Final answer
    x = 1,214.34

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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.