Home / 3,902.51-5,385.47-2,134.11

Finding the Fourth Proportional to 3,902.51, 5,385.47 and 2,134.11

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Solution

The fourth proportional to 3,902.51, 5,385.47 and 2,134.11 is: 2,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.51 : 5,385.47 = 2,134.11 : x
  2. Step 2: Convert to fraction form
    3,902.51/5,385.47 = 2,134.11/x
  3. Step 3: Cross multiply
    3,902.51x = 5,385.47 × 2,134.11
  4. Step 4: Simplify right side
    3,902.51x = 11,493,194.91
  5. Step 5: Solve for x
    x = 11,493,194.91/3,902.51
  6. Step 6: Final answer
    x = 2,945.08

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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.