Home / 3,938.38-5,434.88-2,259.74

Finding the Fourth Proportional to 3,938.38, 5,434.88 and 2,259.74

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Solution

The fourth proportional to 3,938.38, 5,434.88 and 2,259.74 is: 3,118.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.38 : 5,434.88 = 2,259.74 : x
  2. Step 2: Convert to fraction form
    3,938.38/5,434.88 = 2,259.74/x
  3. Step 3: Cross multiply
    3,938.38x = 5,434.88 × 2,259.74
  4. Step 4: Simplify right side
    3,938.38x = 12,281,415.73
  5. Step 5: Solve for x
    x = 12,281,415.73/3,938.38
  6. Step 6: Final answer
    x = 3,118.39

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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.