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Finding the Fourth Proportional to 8,570.46, 12,859.51 and 5,449.63

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Solution

The fourth proportional to 8,570.46, 12,859.51 and 5,449.63 is: 8,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.46 : 12,859.51 = 5,449.63 : x
  2. Step 2: Convert to fraction form
    8,570.46/12,859.51 = 5,449.63/x
  3. Step 3: Cross multiply
    8,570.46x = 12,859.51 × 5,449.63
  4. Step 4: Simplify right side
    8,570.46x = 70,079,571.48
  5. Step 5: Solve for x
    x = 70,079,571.48/8,570.46
  6. Step 6: Final answer
    x = 8,176.87

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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.