Home / 8,680.19-13,020.32-2,106.38

Finding the Fourth Proportional to 8,680.19, 13,020.32 and 2,106.38

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Solution

The fourth proportional to 8,680.19, 13,020.32 and 2,106.38 is: 3,159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.19 : 13,020.32 = 2,106.38 : x
  2. Step 2: Convert to fraction form
    8,680.19/13,020.32 = 2,106.38/x
  3. Step 3: Cross multiply
    8,680.19x = 13,020.32 × 2,106.38
  4. Step 4: Simplify right side
    8,680.19x = 27,425,680.42
  5. Step 5: Solve for x
    x = 27,425,680.42/8,680.19
  6. Step 6: Final answer
    x = 3,159.57

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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.