Home / 8,680.80-13,015.36-4,065.12

Finding the Fourth Proportional to 8,680.80, 13,015.36 and 4,065.12

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Solution

The fourth proportional to 8,680.80, 13,015.36 and 4,065.12 is: 6,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.80 : 13,015.36 = 4,065.12 : x
  2. Step 2: Convert to fraction form
    8,680.80/13,015.36 = 4,065.12/x
  3. Step 3: Cross multiply
    8,680.80x = 13,015.36 × 4,065.12
  4. Step 4: Simplify right side
    8,680.80x = 52,909,000.24
  5. Step 5: Solve for x
    x = 52,909,000.24/8,680.80
  6. Step 6: Final answer
    x = 6,094.95

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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.