Home / 8,385.42-12,579.38-2,837.28

Finding the Fourth Proportional to 8,385.42, 12,579.38 and 2,837.28

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Solution

The fourth proportional to 8,385.42, 12,579.38 and 2,837.28 is: 4,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.42 : 12,579.38 = 2,837.28 : x
  2. Step 2: Convert to fraction form
    8,385.42/12,579.38 = 2,837.28/x
  3. Step 3: Cross multiply
    8,385.42x = 12,579.38 × 2,837.28
  4. Step 4: Simplify right side
    8,385.42x = 35,691,209.10
  5. Step 5: Solve for x
    x = 35,691,209.10/8,385.42
  6. Step 6: Final answer
    x = 4,256.34

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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.