Home / 3,320.40-4,581.78-1,922.88

Finding the Fourth Proportional to 3,320.40, 4,581.78 and 1,922.88

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Solution

The fourth proportional to 3,320.40, 4,581.78 and 1,922.88 is: 2,653.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.40 : 4,581.78 = 1,922.88 : x
  2. Step 2: Convert to fraction form
    3,320.40/4,581.78 = 1,922.88/x
  3. Step 3: Cross multiply
    3,320.40x = 4,581.78 × 1,922.88
  4. Step 4: Simplify right side
    3,320.40x = 8,810,213.13
  5. Step 5: Solve for x
    x = 8,810,213.13/3,320.40
  6. Step 6: Final answer
    x = 2,653.36

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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.