Home / 3,934.08-5,428.83-2,165.35

Finding the Fourth Proportional to 3,934.08, 5,428.83 and 2,165.35

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Solution

The fourth proportional to 3,934.08, 5,428.83 and 2,165.35 is: 2,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.08 : 5,428.83 = 2,165.35 : x
  2. Step 2: Convert to fraction form
    3,934.08/5,428.83 = 2,165.35/x
  3. Step 3: Cross multiply
    3,934.08x = 5,428.83 × 2,165.35
  4. Step 4: Simplify right side
    3,934.08x = 11,755,289.90
  5. Step 5: Solve for x
    x = 11,755,289.90/3,934.08
  6. Step 6: Final answer
    x = 2,988.07

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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.