Home / 7,043.80-9,720.15-3,857.04

Finding the Fourth Proportional to 7,043.80, 9,720.15 and 3,857.04

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Solution

The fourth proportional to 7,043.80, 9,720.15 and 3,857.04 is: 5,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,043.80 : 9,720.15 = 3,857.04 : x
  2. Step 2: Convert to fraction form
    7,043.80/9,720.15 = 3,857.04/x
  3. Step 3: Cross multiply
    7,043.80x = 9,720.15 × 3,857.04
  4. Step 4: Simplify right side
    7,043.80x = 37,491,018.35
  5. Step 5: Solve for x
    x = 37,491,018.35/7,043.80
  6. Step 6: Final answer
    x = 5,322.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.