Home / 5,381.91-7,422.41-3,491.63

Finding the Fourth Proportional to 5,381.91, 7,422.41 and 3,491.63

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Solution

The fourth proportional to 5,381.91, 7,422.41 and 3,491.63 is: 4,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.91 : 7,422.41 = 3,491.63 : x
  2. Step 2: Convert to fraction form
    5,381.91/7,422.41 = 3,491.63/x
  3. Step 3: Cross multiply
    5,381.91x = 7,422.41 × 3,491.63
  4. Step 4: Simplify right side
    5,381.91x = 25,916,309.43
  5. Step 5: Solve for x
    x = 25,916,309.43/5,381.91
  6. Step 6: Final answer
    x = 4,815.45

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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.