Home / 3,122.72-4,694.88-2,919.68

Finding the Fourth Proportional to 3,122.72, 4,694.88 and 2,919.68

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Solution

The fourth proportional to 3,122.72, 4,694.88 and 2,919.68 is: 4,389.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.72 : 4,694.88 = 2,919.68 : x
  2. Step 2: Convert to fraction form
    3,122.72/4,694.88 = 2,919.68/x
  3. Step 3: Cross multiply
    3,122.72x = 4,694.88 × 2,919.68
  4. Step 4: Simplify right side
    3,122.72x = 13,707,547.24
  5. Step 5: Solve for x
    x = 13,707,547.24/3,122.72
  6. Step 6: Final answer
    x = 4,389.62

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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.