Home / 2,688.07-3,724.47-2,629.75

Finding the Fourth Proportional to 2,688.07, 3,724.47 and 2,629.75

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Solution

The fourth proportional to 2,688.07, 3,724.47 and 2,629.75 is: 3,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.07 : 3,724.47 = 2,629.75 : x
  2. Step 2: Convert to fraction form
    2,688.07/3,724.47 = 2,629.75/x
  3. Step 3: Cross multiply
    2,688.07x = 3,724.47 × 2,629.75
  4. Step 4: Simplify right side
    2,688.07x = 9,794,424.98
  5. Step 5: Solve for x
    x = 9,794,424.98/2,688.07
  6. Step 6: Final answer
    x = 3,643.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.