Home / 2,926.92-4,391.32-979.40

Finding the Fourth Proportional to 2,926.92, 4,391.32 and 979.40

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Solution

The fourth proportional to 2,926.92, 4,391.32 and 979.40 is: 1,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.92 : 4,391.32 = 979.40 : x
  2. Step 2: Convert to fraction form
    2,926.92/4,391.32 = 979.40/x
  3. Step 3: Cross multiply
    2,926.92x = 4,391.32 × 979.40
  4. Step 4: Simplify right side
    2,926.92x = 4,300,858.81
  5. Step 5: Solve for x
    x = 4,300,858.81/2,926.92
  6. Step 6: Final answer
    x = 1,469.41

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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.