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Finding the Fourth Proportional to 1,668.58, 2,503.85 and 889.16

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Solution

The fourth proportional to 1,668.58, 2,503.85 and 889.16 is: 1,334.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.58 : 2,503.85 = 889.16 : x
  2. Step 2: Convert to fraction form
    1,668.58/2,503.85 = 889.16/x
  3. Step 3: Cross multiply
    1,668.58x = 2,503.85 × 889.16
  4. Step 4: Simplify right side
    1,668.58x = 2,226,306.30
  5. Step 5: Solve for x
    x = 2,226,306.30/1,668.58
  6. Step 6: Final answer
    x = 1,334.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.