Home / 1,667.20-2,500.83-1,277.90

Finding the Fourth Proportional to 1,667.20, 2,500.83 and 1,277.90

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Solution

The fourth proportional to 1,667.20, 2,500.83 and 1,277.90 is: 1,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.20 : 2,500.83 = 1,277.90 : x
  2. Step 2: Convert to fraction form
    1,667.20/2,500.83 = 1,277.90/x
  3. Step 3: Cross multiply
    1,667.20x = 2,500.83 × 1,277.90
  4. Step 4: Simplify right side
    1,667.20x = 3,195,810.66
  5. Step 5: Solve for x
    x = 3,195,810.66/1,667.20
  6. Step 6: Final answer
    x = 1,916.87

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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.