Home / 8,853.80-13,274.55-3,920.75

Finding the Fourth Proportional to 8,853.80, 13,274.55 and 3,920.75

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Solution

The fourth proportional to 8,853.80, 13,274.55 and 3,920.75 is: 5,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.80 : 13,274.55 = 3,920.75 : x
  2. Step 2: Convert to fraction form
    8,853.80/13,274.55 = 3,920.75/x
  3. Step 3: Cross multiply
    8,853.80x = 13,274.55 × 3,920.75
  4. Step 4: Simplify right side
    8,853.80x = 52,046,191.91
  5. Step 5: Solve for x
    x = 52,046,191.91/8,853.80
  6. Step 6: Final answer
    x = 5,878.40

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1.5x scale

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.