Home / 3,937.79-5,434.28-2,169.46

Finding the Fourth Proportional to 3,937.79, 5,434.28 and 2,169.46

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Solution

The fourth proportional to 3,937.79, 5,434.28 and 2,169.46 is: 2,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,937.79 : 5,434.28 = 2,169.46 : x
  2. Step 2: Convert to fraction form
    3,937.79/5,434.28 = 2,169.46/x
  3. Step 3: Cross multiply
    3,937.79x = 5,434.28 × 2,169.46
  4. Step 4: Simplify right side
    3,937.79x = 11,789,457.17
  5. Step 5: Solve for x
    x = 11,789,457.17/3,937.79
  6. Step 6: Final answer
    x = 2,993.93

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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.