Home / 2,722.78-3,758.49-2,130.94

Finding the Fourth Proportional to 2,722.78, 3,758.49 and 2,130.94

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Solution

The fourth proportional to 2,722.78, 3,758.49 and 2,130.94 is: 2,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.78 : 3,758.49 = 2,130.94 : x
  2. Step 2: Convert to fraction form
    2,722.78/3,758.49 = 2,130.94/x
  3. Step 3: Cross multiply
    2,722.78x = 3,758.49 × 2,130.94
  4. Step 4: Simplify right side
    2,722.78x = 8,009,116.68
  5. Step 5: Solve for x
    x = 8,009,116.68/2,722.78
  6. Step 6: Final answer
    x = 2,941.52

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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.