Home / 5,381.70-7,426.69-2,991.68

Finding the Fourth Proportional to 5,381.70, 7,426.69 and 2,991.68

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Solution

The fourth proportional to 5,381.70, 7,426.69 and 2,991.68 is: 4,128.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.70 : 7,426.69 = 2,991.68 : x
  2. Step 2: Convert to fraction form
    5,381.70/7,426.69 = 2,991.68/x
  3. Step 3: Cross multiply
    5,381.70x = 7,426.69 × 2,991.68
  4. Step 4: Simplify right side
    5,381.70x = 22,218,279.94
  5. Step 5: Solve for x
    x = 22,218,279.94/5,381.70
  6. Step 6: Final answer
    x = 4,128.49

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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.