Home / 1,172.24-1,617.60-674.80

Finding the Fourth Proportional to 1,172.24, 1,617.60 and 674.80

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Solution

The fourth proportional to 1,172.24, 1,617.60 and 674.80 is: 931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.24 : 1,617.60 = 674.80 : x
  2. Step 2: Convert to fraction form
    1,172.24/1,617.60 = 674.80/x
  3. Step 3: Cross multiply
    1,172.24x = 1,617.60 × 674.80
  4. Step 4: Simplify right side
    1,172.24x = 1,091,556.48
  5. Step 5: Solve for x
    x = 1,091,556.48/1,172.24
  6. Step 6: Final answer
    x = 931.17

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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.