Home / 8,868.90-13,300.20-3,929.70

Finding the Fourth Proportional to 8,868.90, 13,300.20 and 3,929.70

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Solution

The fourth proportional to 8,868.90, 13,300.20 and 3,929.70 is: 5,893.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.90 : 13,300.20 = 3,929.70 : x
  2. Step 2: Convert to fraction form
    8,868.90/13,300.20 = 3,929.70/x
  3. Step 3: Cross multiply
    8,868.90x = 13,300.20 × 3,929.70
  4. Step 4: Simplify right side
    8,868.90x = 52,265,795.94
  5. Step 5: Solve for x
    x = 52,265,795.94/8,868.90
  6. Step 6: Final answer
    x = 5,893.15

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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.