Home / 5,381.87-7,426.77-2,991.96

Finding the Fourth Proportional to 5,381.87, 7,426.77 and 2,991.96

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Solution

The fourth proportional to 5,381.87, 7,426.77 and 2,991.96 is: 4,128.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.87 : 7,426.77 = 2,991.96 : x
  2. Step 2: Convert to fraction form
    5,381.87/7,426.77 = 2,991.96/x
  3. Step 3: Cross multiply
    5,381.87x = 7,426.77 × 2,991.96
  4. Step 4: Simplify right side
    5,381.87x = 22,220,598.77
  5. Step 5: Solve for x
    x = 22,220,598.77/5,381.87
  6. Step 6: Final answer
    x = 4,128.79

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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.