Home / 8,543.20-12,815.42-2,619.32

Finding the Fourth Proportional to 8,543.20, 12,815.42 and 2,619.32

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Solution

The fourth proportional to 8,543.20, 12,815.42 and 2,619.32 is: 3,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.20 : 12,815.42 = 2,619.32 : x
  2. Step 2: Convert to fraction form
    8,543.20/12,815.42 = 2,619.32/x
  3. Step 3: Cross multiply
    8,543.20x = 12,815.42 × 2,619.32
  4. Step 4: Simplify right side
    8,543.20x = 33,567,656.80
  5. Step 5: Solve for x
    x = 33,567,656.80/8,543.20
  6. Step 6: Final answer
    x = 3,929.17

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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.