Home / 8,806.20-13,209.30-3,870.60

Finding the Fourth Proportional to 8,806.20, 13,209.30 and 3,870.60

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Solution

The fourth proportional to 8,806.20, 13,209.30 and 3,870.60 is: 5,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.20 : 13,209.30 = 3,870.60 : x
  2. Step 2: Convert to fraction form
    8,806.20/13,209.30 = 3,870.60/x
  3. Step 3: Cross multiply
    8,806.20x = 13,209.30 × 3,870.60
  4. Step 4: Simplify right side
    8,806.20x = 51,127,916.58
  5. Step 5: Solve for x
    x = 51,127,916.58/8,806.20
  6. Step 6: Final answer
    x = 5,805.90

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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.