Home / 9,121.14-13,680.09-2,547.99

Finding the Fourth Proportional to 9,121.14, 13,680.09 and 2,547.99

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Solution

The fourth proportional to 9,121.14, 13,680.09 and 2,547.99 is: 3,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.14 : 13,680.09 = 2,547.99 : x
  2. Step 2: Convert to fraction form
    9,121.14/13,680.09 = 2,547.99/x
  3. Step 3: Cross multiply
    9,121.14x = 13,680.09 × 2,547.99
  4. Step 4: Simplify right side
    9,121.14x = 34,856,732.52
  5. Step 5: Solve for x
    x = 34,856,732.52/9,121.14
  6. Step 6: Final answer
    x = 3,821.53

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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.