Home / 3,122.91-4,310.46-1,943.28

Finding the Fourth Proportional to 3,122.91, 4,310.46 and 1,943.28

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Solution

The fourth proportional to 3,122.91, 4,310.46 and 1,943.28 is: 2,682.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.91 : 4,310.46 = 1,943.28 : x
  2. Step 2: Convert to fraction form
    3,122.91/4,310.46 = 1,943.28/x
  3. Step 3: Cross multiply
    3,122.91x = 4,310.46 × 1,943.28
  4. Step 4: Simplify right side
    3,122.91x = 8,376,430.71
  5. Step 5: Solve for x
    x = 8,376,430.71/3,122.91
  6. Step 6: Final answer
    x = 2,682.25

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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.