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Finding the Fourth Proportional to 1,778.85, 2,454.82 and 992.95

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Solution

The fourth proportional to 1,778.85, 2,454.82 and 992.95 is: 1,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.85 : 2,454.82 = 992.95 : x
  2. Step 2: Convert to fraction form
    1,778.85/2,454.82 = 992.95/x
  3. Step 3: Cross multiply
    1,778.85x = 2,454.82 × 992.95
  4. Step 4: Simplify right side
    1,778.85x = 2,437,513.52
  5. Step 5: Solve for x
    x = 2,437,513.52/1,778.85
  6. Step 6: Final answer
    x = 1,370.27

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1.5x scale

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.