Home / 1,874.33-2,811.24-487.76

Finding the Fourth Proportional to 1,874.33, 2,811.24 and 487.76

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Solution

The fourth proportional to 1,874.33, 2,811.24 and 487.76 is: 731.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.33 : 2,811.24 = 487.76 : x
  2. Step 2: Convert to fraction form
    1,874.33/2,811.24 = 487.76/x
  3. Step 3: Cross multiply
    1,874.33x = 2,811.24 × 487.76
  4. Step 4: Simplify right side
    1,874.33x = 1,371,196.37
  5. Step 5: Solve for x
    x = 1,371,196.37/1,874.33
  6. Step 6: Final answer
    x = 731.57

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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.