Home / 5,107.53-7,657.39-2,640.77

Finding the Fourth Proportional to 5,107.53, 7,657.39 and 2,640.77

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Solution

The fourth proportional to 5,107.53, 7,657.39 and 2,640.77 is: 3,959.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.53 : 7,657.39 = 2,640.77 : x
  2. Step 2: Convert to fraction form
    5,107.53/7,657.39 = 2,640.77/x
  3. Step 3: Cross multiply
    5,107.53x = 7,657.39 × 2,640.77
  4. Step 4: Simplify right side
    5,107.53x = 20,221,405.79
  5. Step 5: Solve for x
    x = 20,221,405.79/5,107.53
  6. Step 6: Final answer
    x = 3,959.14

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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.