Home / 2,822.20-4,232.26-972.80

Finding the Fourth Proportional to 2,822.20, 4,232.26 and 972.80

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Solution

The fourth proportional to 2,822.20, 4,232.26 and 972.80 is: 1,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.20 : 4,232.26 = 972.80 : x
  2. Step 2: Convert to fraction form
    2,822.20/4,232.26 = 972.80/x
  3. Step 3: Cross multiply
    2,822.20x = 4,232.26 × 972.80
  4. Step 4: Simplify right side
    2,822.20x = 4,117,142.53
  5. Step 5: Solve for x
    x = 4,117,142.53/2,822.20
  6. Step 6: Final answer
    x = 1,458.84

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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.