Home / 8,178.75-12,266.91-2,631.39

Finding the Fourth Proportional to 8,178.75, 12,266.91 and 2,631.39

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Solution

The fourth proportional to 8,178.75, 12,266.91 and 2,631.39 is: 3,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.75 : 12,266.91 = 2,631.39 : x
  2. Step 2: Convert to fraction form
    8,178.75/12,266.91 = 2,631.39/x
  3. Step 3: Cross multiply
    8,178.75x = 12,266.91 × 2,631.39
  4. Step 4: Simplify right side
    8,178.75x = 32,279,024.30
  5. Step 5: Solve for x
    x = 32,279,024.30/8,178.75
  6. Step 6: Final answer
    x = 3,946.69

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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.