Home / 8,580.90-12,869.19-3,386.82

Finding the Fourth Proportional to 8,580.90, 12,869.19 and 3,386.82

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Solution

The fourth proportional to 8,580.90, 12,869.19 and 3,386.82 is: 5,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.90 : 12,869.19 = 3,386.82 : x
  2. Step 2: Convert to fraction form
    8,580.90/12,869.19 = 3,386.82/x
  3. Step 3: Cross multiply
    8,580.90x = 12,869.19 × 3,386.82
  4. Step 4: Simplify right side
    8,580.90x = 43,585,630.08
  5. Step 5: Solve for x
    x = 43,585,630.08/8,580.90
  6. Step 6: Final answer
    x = 5,079.38

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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.