Home / 7,764.12-11,643.66-3,380.28

Finding the Fourth Proportional to 7,764.12, 11,643.66 and 3,380.28

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Solution

The fourth proportional to 7,764.12, 11,643.66 and 3,380.28 is: 5,069.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.12 : 11,643.66 = 3,380.28 : x
  2. Step 2: Convert to fraction form
    7,764.12/11,643.66 = 3,380.28/x
  3. Step 3: Cross multiply
    7,764.12x = 11,643.66 × 3,380.28
  4. Step 4: Simplify right side
    7,764.12x = 39,358,831.02
  5. Step 5: Solve for x
    x = 39,358,831.02/7,764.12
  6. Step 6: Final answer
    x = 5,069.32

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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.