Home / 2,150.06-3,217.80-1,328.90

Finding the Fourth Proportional to 2,150.06, 3,217.80 and 1,328.90

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Solution

The fourth proportional to 2,150.06, 3,217.80 and 1,328.90 is: 1,988.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.06 : 3,217.80 = 1,328.90 : x
  2. Step 2: Convert to fraction form
    2,150.06/3,217.80 = 1,328.90/x
  3. Step 3: Cross multiply
    2,150.06x = 3,217.80 × 1,328.90
  4. Step 4: Simplify right side
    2,150.06x = 4,276,134.42
  5. Step 5: Solve for x
    x = 4,276,134.42/2,150.06
  6. Step 6: Final answer
    x = 1,988.84

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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.