Home / 1,878.11-2,591.85-1,038.95

Finding the Fourth Proportional to 1,878.11, 2,591.85 and 1,038.95

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Solution

The fourth proportional to 1,878.11, 2,591.85 and 1,038.95 is: 1,433.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.11 : 2,591.85 = 1,038.95 : x
  2. Step 2: Convert to fraction form
    1,878.11/2,591.85 = 1,038.95/x
  3. Step 3: Cross multiply
    1,878.11x = 2,591.85 × 1,038.95
  4. Step 4: Simplify right side
    1,878.11x = 2,692,789.60
  5. Step 5: Solve for x
    x = 2,692,789.60/1,878.11
  6. Step 6: Final answer
    x = 1,433.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.