Home / 8,680.12-13,020.15-2,106.37

Finding the Fourth Proportional to 8,680.12, 13,020.15 and 2,106.37

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Solution

The fourth proportional to 8,680.12, 13,020.15 and 2,106.37 is: 3,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.12 : 13,020.15 = 2,106.37 : x
  2. Step 2: Convert to fraction form
    8,680.12/13,020.15 = 2,106.37/x
  3. Step 3: Cross multiply
    8,680.12x = 13,020.15 × 2,106.37
  4. Step 4: Simplify right side
    8,680.12x = 27,425,253.36
  5. Step 5: Solve for x
    x = 27,425,253.36/8,680.12
  6. Step 6: Final answer
    x = 3,159.55

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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.