Home / 8,005.14-12,009.78-3,075.21

Finding the Fourth Proportional to 8,005.14, 12,009.78 and 3,075.21

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Solution

The fourth proportional to 8,005.14, 12,009.78 and 3,075.21 is: 4,613.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.14 : 12,009.78 = 3,075.21 : x
  2. Step 2: Convert to fraction form
    8,005.14/12,009.78 = 3,075.21/x
  3. Step 3: Cross multiply
    8,005.14x = 12,009.78 × 3,075.21
  4. Step 4: Simplify right side
    8,005.14x = 36,932,595.55
  5. Step 5: Solve for x
    x = 36,932,595.55/8,005.14
  6. Step 6: Final answer
    x = 4,613.61

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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.