Home / 8,256.45-12,378.18-5,651.49

Finding the Fourth Proportional to 8,256.45, 12,378.18 and 5,651.49

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Solution

The fourth proportional to 8,256.45, 12,378.18 and 5,651.49 is: 8,472.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,256.45 : 12,378.18 = 5,651.49 : x
  2. Step 2: Convert to fraction form
    8,256.45/12,378.18 = 5,651.49/x
  3. Step 3: Cross multiply
    8,256.45x = 12,378.18 × 5,651.49
  4. Step 4: Simplify right side
    8,256.45x = 69,955,160.49
  5. Step 5: Solve for x
    x = 69,955,160.49/8,256.45
  6. Step 6: Final answer
    x = 8,472.79

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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.