Home / 8,075.40-11,145.34-6,728.84

Finding the Fourth Proportional to 8,075.40, 11,145.34 and 6,728.84

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Solution

The fourth proportional to 8,075.40, 11,145.34 and 6,728.84 is: 9,286.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.40 : 11,145.34 = 6,728.84 : x
  2. Step 2: Convert to fraction form
    8,075.40/11,145.34 = 6,728.84/x
  3. Step 3: Cross multiply
    8,075.40x = 11,145.34 × 6,728.84
  4. Step 4: Simplify right side
    8,075.40x = 74,995,209.61
  5. Step 5: Solve for x
    x = 74,995,209.61/8,075.40
  6. Step 6: Final answer
    x = 9,286.87

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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.