Home / 8,075.18-12,112.78-3,691.46

Finding the Fourth Proportional to 8,075.18, 12,112.78 and 3,691.46

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Solution

The fourth proportional to 8,075.18, 12,112.78 and 3,691.46 is: 5,537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.18 : 12,112.78 = 3,691.46 : x
  2. Step 2: Convert to fraction form
    8,075.18/12,112.78 = 3,691.46/x
  3. Step 3: Cross multiply
    8,075.18x = 12,112.78 × 3,691.46
  4. Step 4: Simplify right side
    8,075.18x = 44,713,842.86
  5. Step 5: Solve for x
    x = 44,713,842.86/8,075.18
  6. Step 6: Final answer
    x = 5,537.19

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1.5x scale

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.