Home / 8,075.35-12,105.96-3,141.53

Finding the Fourth Proportional to 8,075.35, 12,105.96 and 3,141.53

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Solution

The fourth proportional to 8,075.35, 12,105.96 and 3,141.53 is: 4,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.35 : 12,105.96 = 3,141.53 : x
  2. Step 2: Convert to fraction form
    8,075.35/12,105.96 = 3,141.53/x
  3. Step 3: Cross multiply
    8,075.35x = 12,105.96 × 3,141.53
  4. Step 4: Simplify right side
    8,075.35x = 38,031,277.70
  5. Step 5: Solve for x
    x = 38,031,277.70/8,075.35
  6. Step 6: Final answer
    x = 4,709.55

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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.