Home / 2,943.38-4,056-2,101.71

Finding the Fourth Proportional to 2,943.38, 4,056 and 2,101.71

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Solution

The fourth proportional to 2,943.38, 4,056 and 2,101.71 is: 2,896.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,943.38 : 4,056 = 2,101.71 : x
  2. Step 2: Convert to fraction form
    2,943.38/4,056 = 2,101.71/x
  3. Step 3: Cross multiply
    2,943.38x = 4,056 × 2,101.71
  4. Step 4: Simplify right side
    2,943.38x = 8,524,535.76
  5. Step 5: Solve for x
    x = 8,524,535.76/2,943.38
  6. Step 6: Final answer
    x = 2,896.17

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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.