Home / 4,988.79-6,876.90-4,191.75

Finding the Fourth Proportional to 4,988.79, 6,876.90 and 4,191.75

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Solution

The fourth proportional to 4,988.79, 6,876.90 and 4,191.75 is: 5,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,988.79 : 6,876.90 = 4,191.75 : x
  2. Step 2: Convert to fraction form
    4,988.79/6,876.90 = 4,191.75/x
  3. Step 3: Cross multiply
    4,988.79x = 6,876.90 × 4,191.75
  4. Step 4: Simplify right side
    4,988.79x = 28,826,245.58
  5. Step 5: Solve for x
    x = 28,826,245.58/4,988.79
  6. Step 6: Final answer
    x = 5,778.20

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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.