Home / 2,987.20-4,480.26-1,322.07

Finding the Fourth Proportional to 2,987.20, 4,480.26 and 1,322.07

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Solution

The fourth proportional to 2,987.20, 4,480.26 and 1,322.07 is: 1,982.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.20 : 4,480.26 = 1,322.07 : x
  2. Step 2: Convert to fraction form
    2,987.20/4,480.26 = 1,322.07/x
  3. Step 3: Cross multiply
    2,987.20x = 4,480.26 × 1,322.07
  4. Step 4: Simplify right side
    2,987.20x = 5,923,217.34
  5. Step 5: Solve for x
    x = 5,923,217.34/2,987.20
  6. Step 6: Final answer
    x = 1,982.87

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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.