Home / 8,570.40-12,856.56-2,724.96

Finding the Fourth Proportional to 8,570.40, 12,856.56 and 2,724.96

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Solution

The fourth proportional to 8,570.40, 12,856.56 and 2,724.96 is: 4,087.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.40 : 12,856.56 = 2,724.96 : x
  2. Step 2: Convert to fraction form
    8,570.40/12,856.56 = 2,724.96/x
  3. Step 3: Cross multiply
    8,570.40x = 12,856.56 × 2,724.96
  4. Step 4: Simplify right side
    8,570.40x = 35,033,611.74
  5. Step 5: Solve for x
    x = 35,033,611.74/8,570.40
  6. Step 6: Final answer
    x = 4,087.75

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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.