Home / 3,938.90-5,436.34-2,368.58

Finding the Fourth Proportional to 3,938.90, 5,436.34 and 2,368.58

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Solution

The fourth proportional to 3,938.90, 5,436.34 and 2,368.58 is: 3,269.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.90 : 5,436.34 = 2,368.58 : x
  2. Step 2: Convert to fraction form
    3,938.90/5,436.34 = 2,368.58/x
  3. Step 3: Cross multiply
    3,938.90x = 5,436.34 × 2,368.58
  4. Step 4: Simplify right side
    3,938.90x = 12,876,406.20
  5. Step 5: Solve for x
    x = 12,876,406.20/3,938.90
  6. Step 6: Final answer
    x = 3,269.04

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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.