Home / 1,668.20-2,301.98-922.16

Finding the Fourth Proportional to 1,668.20, 2,301.98 and 922.16

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Solution

The fourth proportional to 1,668.20, 2,301.98 and 922.16 is: 1,272.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.20 : 2,301.98 = 922.16 : x
  2. Step 2: Convert to fraction form
    1,668.20/2,301.98 = 922.16/x
  3. Step 3: Cross multiply
    1,668.20x = 2,301.98 × 922.16
  4. Step 4: Simplify right side
    1,668.20x = 2,122,793.88
  5. Step 5: Solve for x
    x = 2,122,793.88/1,668.20
  6. Step 6: Final answer
    x = 1,272.51

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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.