Home / 8,812.30-13,219.05-2,807.90

Finding the Fourth Proportional to 8,812.30, 13,219.05 and 2,807.90

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Solution

The fourth proportional to 8,812.30, 13,219.05 and 2,807.90 is: 4,212.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.30 : 13,219.05 = 2,807.90 : x
  2. Step 2: Convert to fraction form
    8,812.30/13,219.05 = 2,807.90/x
  3. Step 3: Cross multiply
    8,812.30x = 13,219.05 × 2,807.90
  4. Step 4: Simplify right side
    8,812.30x = 37,117,770.50
  5. Step 5: Solve for x
    x = 37,117,770.50/8,812.30
  6. Step 6: Final answer
    x = 4,212.04

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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.