Home / 3,938.34-5,908.05-1,340.58

Finding the Fourth Proportional to 3,938.34, 5,908.05 and 1,340.58

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Solution

The fourth proportional to 3,938.34, 5,908.05 and 1,340.58 is: 2,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.34 : 5,908.05 = 1,340.58 : x
  2. Step 2: Convert to fraction form
    3,938.34/5,908.05 = 1,340.58/x
  3. Step 3: Cross multiply
    3,938.34x = 5,908.05 × 1,340.58
  4. Step 4: Simplify right side
    3,938.34x = 7,920,213.67
  5. Step 5: Solve for x
    x = 7,920,213.67/3,938.34
  6. Step 6: Final answer
    x = 2,011.05

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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.