Home / 2,928.83-4,390.61-1,078.65

Finding the Fourth Proportional to 2,928.83, 4,390.61 and 1,078.65

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Solution

The fourth proportional to 2,928.83, 4,390.61 and 1,078.65 is: 1,617.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.83 : 4,390.61 = 1,078.65 : x
  2. Step 2: Convert to fraction form
    2,928.83/4,390.61 = 1,078.65/x
  3. Step 3: Cross multiply
    2,928.83x = 4,390.61 × 1,078.65
  4. Step 4: Simplify right side
    2,928.83x = 4,735,926.08
  5. Step 5: Solve for x
    x = 4,735,926.08/2,928.83
  6. Step 6: Final answer
    x = 1,617.01

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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.