Home / 8,270.19-12,385.23-3,888.90

Finding the Fourth Proportional to 8,270.19, 12,385.23 and 3,888.90

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Solution

The fourth proportional to 8,270.19, 12,385.23 and 3,888.90 is: 5,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.19 : 12,385.23 = 3,888.90 : x
  2. Step 2: Convert to fraction form
    8,270.19/12,385.23 = 3,888.90/x
  3. Step 3: Cross multiply
    8,270.19x = 12,385.23 × 3,888.90
  4. Step 4: Simplify right side
    8,270.19x = 48,164,920.95
  5. Step 5: Solve for x
    x = 48,164,920.95/8,270.19
  6. Step 6: Final answer
    x = 5,823.92

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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.