Home / 3,903.38-5,386.42-2,134.63

Finding the Fourth Proportional to 3,903.38, 5,386.42 and 2,134.63

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Solution

The fourth proportional to 3,903.38, 5,386.42 and 2,134.63 is: 2,945.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.38 : 5,386.42 = 2,134.63 : x
  2. Step 2: Convert to fraction form
    3,903.38/5,386.42 = 2,134.63/x
  3. Step 3: Cross multiply
    3,903.38x = 5,386.42 × 2,134.63
  4. Step 4: Simplify right side
    3,903.38x = 11,498,013.72
  5. Step 5: Solve for x
    x = 11,498,013.72/3,903.38
  6. Step 6: Final answer
    x = 2,945.66

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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.