Home / 8,968.70-12,377.78-5,191.80

Finding the Fourth Proportional to 8,968.70, 12,377.78 and 5,191.80

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Solution

The fourth proportional to 8,968.70, 12,377.78 and 5,191.80 is: 7,165.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.70 : 12,377.78 = 5,191.80 : x
  2. Step 2: Convert to fraction form
    8,968.70/12,377.78 = 5,191.80/x
  3. Step 3: Cross multiply
    8,968.70x = 12,377.78 × 5,191.80
  4. Step 4: Simplify right side
    8,968.70x = 64,262,958.20
  5. Step 5: Solve for x
    x = 64,262,958.20/8,968.70
  6. Step 6: Final answer
    x = 7,165.25

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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.