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Finding the Fourth Proportional to 8,570.41, 12,859.43 and 5,449.58

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Solution

The fourth proportional to 8,570.41, 12,859.43 and 5,449.58 is: 8,176.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.41 : 12,859.43 = 5,449.58 : x
  2. Step 2: Convert to fraction form
    8,570.41/12,859.43 = 5,449.58/x
  3. Step 3: Cross multiply
    8,570.41x = 12,859.43 × 5,449.58
  4. Step 4: Simplify right side
    8,570.41x = 70,078,449.22
  5. Step 5: Solve for x
    x = 70,078,449.22/8,570.41
  6. Step 6: Final answer
    x = 8,176.79

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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.