Home / 1,161.20-1,731.16-1,058.60

Finding the Fourth Proportional to 1,161.20, 1,731.16 and 1,058.60

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Solution

The fourth proportional to 1,161.20, 1,731.16 and 1,058.60 is: 1,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.20 : 1,731.16 = 1,058.60 : x
  2. Step 2: Convert to fraction form
    1,161.20/1,731.16 = 1,058.60/x
  3. Step 3: Cross multiply
    1,161.20x = 1,731.16 × 1,058.60
  4. Step 4: Simplify right side
    1,161.20x = 1,832,605.98
  5. Step 5: Solve for x
    x = 1,832,605.98/1,161.20
  6. Step 6: Final answer
    x = 1,578.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.