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Finding the Fourth Proportional to 6,763.32, 9,321.72 and 5,571.84

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Solution

The fourth proportional to 6,763.32, 9,321.72 and 5,571.84 is: 7,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.32 : 9,321.72 = 5,571.84 : x
  2. Step 2: Convert to fraction form
    6,763.32/9,321.72 = 5,571.84/x
  3. Step 3: Cross multiply
    6,763.32x = 9,321.72 × 5,571.84
  4. Step 4: Simplify right side
    6,763.32x = 51,939,132.36
  5. Step 5: Solve for x
    x = 51,939,132.36/6,763.32
  6. Step 6: Final answer
    x = 7,679.53

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1.5x scale

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.