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Finding the Fourth Proportional to 3,523.70, 5,309.75 and 2,920.92

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Solution

The fourth proportional to 3,523.70, 5,309.75 and 2,920.92 is: 4,401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,523.70 : 5,309.75 = 2,920.92 : x
  2. Step 2: Convert to fraction form
    3,523.70/5,309.75 = 2,920.92/x
  3. Step 3: Cross multiply
    3,523.70x = 5,309.75 × 2,920.92
  4. Step 4: Simplify right side
    3,523.70x = 15,509,340.37
  5. Step 5: Solve for x
    x = 15,509,340.37/3,523.70
  6. Step 6: Final answer
    x = 4,401.44

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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.