Home / 8,087.80-12,107.40-4,799.20

Finding the Fourth Proportional to 8,087.80, 12,107.40 and 4,799.20

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Solution

The fourth proportional to 8,087.80, 12,107.40 and 4,799.20 is: 7,184.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.80 : 12,107.40 = 4,799.20 : x
  2. Step 2: Convert to fraction form
    8,087.80/12,107.40 = 4,799.20/x
  3. Step 3: Cross multiply
    8,087.80x = 12,107.40 × 4,799.20
  4. Step 4: Simplify right side
    8,087.80x = 58,105,834.08
  5. Step 5: Solve for x
    x = 58,105,834.08/8,087.80
  6. Step 6: Final answer
    x = 7,184.38

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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.