Home / 1,668.48-2,503.17-938.58

Finding the Fourth Proportional to 1,668.48, 2,503.17 and 938.58

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Solution

The fourth proportional to 1,668.48, 2,503.17 and 938.58 is: 1,408.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.48 : 2,503.17 = 938.58 : x
  2. Step 2: Convert to fraction form
    1,668.48/2,503.17 = 938.58/x
  3. Step 3: Cross multiply
    1,668.48x = 2,503.17 × 938.58
  4. Step 4: Simplify right side
    1,668.48x = 2,349,425.30
  5. Step 5: Solve for x
    x = 2,349,425.30/1,668.48
  6. Step 6: Final answer
    x = 1,408.12

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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.