Home / 3,893.15-5,372.56-2,124.79

Finding the Fourth Proportional to 3,893.15, 5,372.56 and 2,124.79

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Solution

The fourth proportional to 3,893.15, 5,372.56 and 2,124.79 is: 2,932.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.15 : 5,372.56 = 2,124.79 : x
  2. Step 2: Convert to fraction form
    3,893.15/5,372.56 = 2,124.79/x
  3. Step 3: Cross multiply
    3,893.15x = 5,372.56 × 2,124.79
  4. Step 4: Simplify right side
    3,893.15x = 11,415,543.02
  5. Step 5: Solve for x
    x = 11,415,543.02/3,893.15
  6. Step 6: Final answer
    x = 2,932.22

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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.