Home / 6,619.12-9,928.88-3,330.40

Finding the Fourth Proportional to 6,619.12, 9,928.88 and 3,330.40

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Solution

The fourth proportional to 6,619.12, 9,928.88 and 3,330.40 is: 4,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.12 : 9,928.88 = 3,330.40 : x
  2. Step 2: Convert to fraction form
    6,619.12/9,928.88 = 3,330.40/x
  3. Step 3: Cross multiply
    6,619.12x = 9,928.88 × 3,330.40
  4. Step 4: Simplify right side
    6,619.12x = 33,067,141.95
  5. Step 5: Solve for x
    x = 33,067,141.95/6,619.12
  6. Step 6: Final answer
    x = 4,995.70

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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.