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Finding the Fourth Proportional to 1,486.83, 2,229.53 and 837.39

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Solution

The fourth proportional to 1,486.83, 2,229.53 and 837.39 is: 1,255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.83 : 2,229.53 = 837.39 : x
  2. Step 2: Convert to fraction form
    1,486.83/2,229.53 = 837.39/x
  3. Step 3: Cross multiply
    1,486.83x = 2,229.53 × 837.39
  4. Step 4: Simplify right side
    1,486.83x = 1,866,981.94
  5. Step 5: Solve for x
    x = 1,866,981.94/1,486.83
  6. Step 6: Final answer
    x = 1,255.68

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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.