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Finding the Fourth Proportional to 3,389.70, 5,104.86 and 2,983.28

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Solution

The fourth proportional to 3,389.70, 5,104.86 and 2,983.28 is: 4,492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.70 : 5,104.86 = 2,983.28 : x
  2. Step 2: Convert to fraction form
    3,389.70/5,104.86 = 2,983.28/x
  3. Step 3: Cross multiply
    3,389.70x = 5,104.86 × 2,983.28
  4. Step 4: Simplify right side
    3,389.70x = 15,229,226.74
  5. Step 5: Solve for x
    x = 15,229,226.74/3,389.70
  6. Step 6: Final answer
    x = 4,492.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.