Home / 3,391.35-4,679.51-2,131.52

Finding the Fourth Proportional to 3,391.35, 4,679.51 and 2,131.52

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Solution

The fourth proportional to 3,391.35, 4,679.51 and 2,131.52 is: 2,941.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.35 : 4,679.51 = 2,131.52 : x
  2. Step 2: Convert to fraction form
    3,391.35/4,679.51 = 2,131.52/x
  3. Step 3: Cross multiply
    3,391.35x = 4,679.51 × 2,131.52
  4. Step 4: Simplify right side
    3,391.35x = 9,974,435.10
  5. Step 5: Solve for x
    x = 9,974,435.10/3,391.35
  6. Step 6: Final answer
    x = 2,941.14

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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.