Home / 8,680.29-13,020.43-2,106.47

Finding the Fourth Proportional to 8,680.29, 13,020.43 and 2,106.47

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Solution

The fourth proportional to 8,680.29, 13,020.43 and 2,106.47 is: 3,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.29 : 13,020.43 = 2,106.47 : x
  2. Step 2: Convert to fraction form
    8,680.29/13,020.43 = 2,106.47/x
  3. Step 3: Cross multiply
    8,680.29x = 13,020.43 × 2,106.47
  4. Step 4: Simplify right side
    8,680.29x = 27,427,145.18
  5. Step 5: Solve for x
    x = 27,427,145.18/8,680.29
  6. Step 6: Final answer
    x = 3,159.70

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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.