Home / 7,321.32-10,987.74-3,763.28

Finding the Fourth Proportional to 7,321.32, 10,987.74 and 3,763.28

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Solution

The fourth proportional to 7,321.32, 10,987.74 and 3,763.28 is: 5,647.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.32 : 10,987.74 = 3,763.28 : x
  2. Step 2: Convert to fraction form
    7,321.32/10,987.74 = 3,763.28/x
  3. Step 3: Cross multiply
    7,321.32x = 10,987.74 × 3,763.28
  4. Step 4: Simplify right side
    7,321.32x = 41,349,969.66
  5. Step 5: Solve for x
    x = 41,349,969.66/7,321.32
  6. Step 6: Final answer
    x = 5,647.88

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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.