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Finding the Fourth Proportional to 8,570.87, 12,855.49 and 2,726.45

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Solution

The fourth proportional to 8,570.87, 12,855.49 and 2,726.45 is: 4,089.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.87 : 12,855.49 = 2,726.45 : x
  2. Step 2: Convert to fraction form
    8,570.87/12,855.49 = 2,726.45/x
  3. Step 3: Cross multiply
    8,570.87x = 12,855.49 × 2,726.45
  4. Step 4: Simplify right side
    8,570.87x = 35,049,850.71
  5. Step 5: Solve for x
    x = 35,049,850.71/8,570.87
  6. Step 6: Final answer
    x = 4,089.42

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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.