Home / 8,141.80-12,214.34-2,947.28

Finding the Fourth Proportional to 8,141.80, 12,214.34 and 2,947.28

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Solution

The fourth proportional to 8,141.80, 12,214.34 and 2,947.28 is: 4,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,141.80 : 12,214.34 = 2,947.28 : x
  2. Step 2: Convert to fraction form
    8,141.80/12,214.34 = 2,947.28/x
  3. Step 3: Cross multiply
    8,141.80x = 12,214.34 × 2,947.28
  4. Step 4: Simplify right side
    8,141.80x = 35,999,080.00
  5. Step 5: Solve for x
    x = 35,999,080.00/8,141.80
  6. Step 6: Final answer
    x = 4,421.51

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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.