Home / 3,500.85-5,251.32-1,309.11

Finding the Fourth Proportional to 3,500.85, 5,251.32 and 1,309.11

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Solution

The fourth proportional to 3,500.85, 5,251.32 and 1,309.11 is: 1,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.85 : 5,251.32 = 1,309.11 : x
  2. Step 2: Convert to fraction form
    3,500.85/5,251.32 = 1,309.11/x
  3. Step 3: Cross multiply
    3,500.85x = 5,251.32 × 1,309.11
  4. Step 4: Simplify right side
    3,500.85x = 6,874,555.53
  5. Step 5: Solve for x
    x = 6,874,555.53/3,500.85
  6. Step 6: Final answer
    x = 1,963.68

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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.