Home / 8,253.70-12,378.06-2,988.12

Finding the Fourth Proportional to 8,253.70, 12,378.06 and 2,988.12

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Solution

The fourth proportional to 8,253.70, 12,378.06 and 2,988.12 is: 4,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,253.70 : 12,378.06 = 2,988.12 : x
  2. Step 2: Convert to fraction form
    8,253.70/12,378.06 = 2,988.12/x
  3. Step 3: Cross multiply
    8,253.70x = 12,378.06 × 2,988.12
  4. Step 4: Simplify right side
    8,253.70x = 36,987,128.65
  5. Step 5: Solve for x
    x = 36,987,128.65/8,253.70
  6. Step 6: Final answer
    x = 4,481.28

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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.