Home / 2,991.17-4,127.49-1,812.42

Finding the Fourth Proportional to 2,991.17, 4,127.49 and 1,812.42

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Solution

The fourth proportional to 2,991.17, 4,127.49 and 1,812.42 is: 2,500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.17 : 4,127.49 = 1,812.42 : x
  2. Step 2: Convert to fraction form
    2,991.17/4,127.49 = 1,812.42/x
  3. Step 3: Cross multiply
    2,991.17x = 4,127.49 × 1,812.42
  4. Step 4: Simplify right side
    2,991.17x = 7,480,745.43
  5. Step 5: Solve for x
    x = 7,480,745.43/2,991.17
  6. Step 6: Final answer
    x = 2,500.94

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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.