Home / 8,186.70-12,279.51-2,343.90

Finding the Fourth Proportional to 8,186.70, 12,279.51 and 2,343.90

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Solution

The fourth proportional to 8,186.70, 12,279.51 and 2,343.90 is: 3,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.70 : 12,279.51 = 2,343.90 : x
  2. Step 2: Convert to fraction form
    8,186.70/12,279.51 = 2,343.90/x
  3. Step 3: Cross multiply
    8,186.70x = 12,279.51 × 2,343.90
  4. Step 4: Simplify right side
    8,186.70x = 28,781,943.49
  5. Step 5: Solve for x
    x = 28,781,943.49/8,186.70
  6. Step 6: Final answer
    x = 3,515.70

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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.