Home / 4,121.15-5,688.08-2,687.31

Finding the Fourth Proportional to 4,121.15, 5,688.08 and 2,687.31

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Solution

The fourth proportional to 4,121.15, 5,688.08 and 2,687.31 is: 3,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.15 : 5,688.08 = 2,687.31 : x
  2. Step 2: Convert to fraction form
    4,121.15/5,688.08 = 2,687.31/x
  3. Step 3: Cross multiply
    4,121.15x = 5,688.08 × 2,687.31
  4. Step 4: Simplify right side
    4,121.15x = 15,285,620.83
  5. Step 5: Solve for x
    x = 15,285,620.83/4,121.15
  6. Step 6: Final answer
    x = 3,709.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.