Home / 3,938.78-5,435.48-2,366.87

Finding the Fourth Proportional to 3,938.78, 5,435.48 and 2,366.87

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Solution

The fourth proportional to 3,938.78, 5,435.48 and 2,366.87 is: 3,266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.78 : 5,435.48 = 2,366.87 : x
  2. Step 2: Convert to fraction form
    3,938.78/5,435.48 = 2,366.87/x
  3. Step 3: Cross multiply
    3,938.78x = 5,435.48 × 2,366.87
  4. Step 4: Simplify right side
    3,938.78x = 12,865,053.29
  5. Step 5: Solve for x
    x = 12,865,053.29/3,938.78
  6. Step 6: Final answer
    x = 3,266.25

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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.