Home / 8,721.69-13,084.38-2,878.17

Finding the Fourth Proportional to 8,721.69, 13,084.38 and 2,878.17

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Solution

The fourth proportional to 8,721.69, 13,084.38 and 2,878.17 is: 4,317.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.69 : 13,084.38 = 2,878.17 : x
  2. Step 2: Convert to fraction form
    8,721.69/13,084.38 = 2,878.17/x
  3. Step 3: Cross multiply
    8,721.69x = 13,084.38 × 2,878.17
  4. Step 4: Simplify right side
    8,721.69x = 37,659,069.98
  5. Step 5: Solve for x
    x = 37,659,069.98/8,721.69
  6. Step 6: Final answer
    x = 4,317.86

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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.