Home / 1,948.11-2,919.86-1,124.68

Finding the Fourth Proportional to 1,948.11, 2,919.86 and 1,124.68

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Solution

The fourth proportional to 1,948.11, 2,919.86 and 1,124.68 is: 1,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.11 : 2,919.86 = 1,124.68 : x
  2. Step 2: Convert to fraction form
    1,948.11/2,919.86 = 1,124.68/x
  3. Step 3: Cross multiply
    1,948.11x = 2,919.86 × 1,124.68
  4. Step 4: Simplify right side
    1,948.11x = 3,283,902.52
  5. Step 5: Solve for x
    x = 3,283,902.52/1,948.11
  6. Step 6: Final answer
    x = 1,685.69

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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.