Home / 2,120.01-3,180.21-886.65

Finding the Fourth Proportional to 2,120.01, 3,180.21 and 886.65

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Solution

The fourth proportional to 2,120.01, 3,180.21 and 886.65 is: 1,330.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.01 : 3,180.21 = 886.65 : x
  2. Step 2: Convert to fraction form
    2,120.01/3,180.21 = 886.65/x
  3. Step 3: Cross multiply
    2,120.01x = 3,180.21 × 886.65
  4. Step 4: Simplify right side
    2,120.01x = 2,819,733.20
  5. Step 5: Solve for x
    x = 2,819,733.20/2,120.01
  6. Step 6: Final answer
    x = 1,330.06

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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.