Home / 3,311.28-4,570.56-1,984.32

Finding the Fourth Proportional to 3,311.28, 4,570.56 and 1,984.32

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Solution

The fourth proportional to 3,311.28, 4,570.56 and 1,984.32 is: 2,738.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.28 : 4,570.56 = 1,984.32 : x
  2. Step 2: Convert to fraction form
    3,311.28/4,570.56 = 1,984.32/x
  3. Step 3: Cross multiply
    3,311.28x = 4,570.56 × 1,984.32
  4. Step 4: Simplify right side
    3,311.28x = 9,069,453.62
  5. Step 5: Solve for x
    x = 9,069,453.62/3,311.28
  6. Step 6: Final answer
    x = 2,738.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.