Home / 2,619.16-3,928.72-1,645.94

Finding the Fourth Proportional to 2,619.16, 3,928.72 and 1,645.94

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Solution

The fourth proportional to 2,619.16, 3,928.72 and 1,645.94 is: 2,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.16 : 3,928.72 = 1,645.94 : x
  2. Step 2: Convert to fraction form
    2,619.16/3,928.72 = 1,645.94/x
  3. Step 3: Cross multiply
    2,619.16x = 3,928.72 × 1,645.94
  4. Step 4: Simplify right side
    2,619.16x = 6,466,437.40
  5. Step 5: Solve for x
    x = 6,466,437.40/2,619.16
  6. Step 6: Final answer
    x = 2,468.90

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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.