Home / 1,172.80-1,617.24-1,146.04

Finding the Fourth Proportional to 1,172.80, 1,617.24 and 1,146.04

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Solution

The fourth proportional to 1,172.80, 1,617.24 and 1,146.04 is: 1,580.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.80 : 1,617.24 = 1,146.04 : x
  2. Step 2: Convert to fraction form
    1,172.80/1,617.24 = 1,146.04/x
  3. Step 3: Cross multiply
    1,172.80x = 1,617.24 × 1,146.04
  4. Step 4: Simplify right side
    1,172.80x = 1,853,421.73
  5. Step 5: Solve for x
    x = 1,853,421.73/1,172.80
  6. Step 6: Final answer
    x = 1,580.34

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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.