Home / 5,107.70-7,657.66-2,640.95

Finding the Fourth Proportional to 5,107.70, 7,657.66 and 2,640.95

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Solution

The fourth proportional to 5,107.70, 7,657.66 and 2,640.95 is: 3,959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.70 : 7,657.66 = 2,640.95 : x
  2. Step 2: Convert to fraction form
    5,107.70/7,657.66 = 2,640.95/x
  3. Step 3: Cross multiply
    5,107.70x = 7,657.66 × 2,640.95
  4. Step 4: Simplify right side
    5,107.70x = 20,223,490.91
  5. Step 5: Solve for x
    x = 20,223,490.91/5,107.70
  6. Step 6: Final answer
    x = 3,959.41

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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.