Home / 3,943.43-5,443.58-2,688.64

Finding the Fourth Proportional to 3,943.43, 5,443.58 and 2,688.64

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Solution

The fourth proportional to 3,943.43, 5,443.58 and 2,688.64 is: 3,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.43 : 5,443.58 = 2,688.64 : x
  2. Step 2: Convert to fraction form
    3,943.43/5,443.58 = 2,688.64/x
  3. Step 3: Cross multiply
    3,943.43x = 5,443.58 × 2,688.64
  4. Step 4: Simplify right side
    3,943.43x = 14,635,843.10
  5. Step 5: Solve for x
    x = 14,635,843.10/3,943.43
  6. Step 6: Final answer
    x = 3,711.45

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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.