Home / 3,938.36-5,903.36-2,087.58

Finding the Fourth Proportional to 3,938.36, 5,903.36 and 2,087.58

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Solution

The fourth proportional to 3,938.36, 5,903.36 and 2,087.58 is: 3,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.36 : 5,903.36 = 2,087.58 : x
  2. Step 2: Convert to fraction form
    3,938.36/5,903.36 = 2,087.58/x
  3. Step 3: Cross multiply
    3,938.36x = 5,903.36 × 2,087.58
  4. Step 4: Simplify right side
    3,938.36x = 12,323,725.83
  5. Step 5: Solve for x
    x = 12,323,725.83/3,938.36
  6. Step 6: Final answer
    x = 3,129.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.