Home / 3,206.31-4,422.57-1,878.72

Finding the Fourth Proportional to 3,206.31, 4,422.57 and 1,878.72

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Solution

The fourth proportional to 3,206.31, 4,422.57 and 1,878.72 is: 2,591.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.31 : 4,422.57 = 1,878.72 : x
  2. Step 2: Convert to fraction form
    3,206.31/4,422.57 = 1,878.72/x
  3. Step 3: Cross multiply
    3,206.31x = 4,422.57 × 1,878.72
  4. Step 4: Simplify right side
    3,206.31x = 8,308,770.71
  5. Step 5: Solve for x
    x = 8,308,770.71/3,206.31
  6. Step 6: Final answer
    x = 2,591.38

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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.