Home / 2,113.78-3,170.66-1,177.30

Finding the Fourth Proportional to 2,113.78, 3,170.66 and 1,177.30

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Solution

The fourth proportional to 2,113.78, 3,170.66 and 1,177.30 is: 1,765.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.78 : 3,170.66 = 1,177.30 : x
  2. Step 2: Convert to fraction form
    2,113.78/3,170.66 = 1,177.30/x
  3. Step 3: Cross multiply
    2,113.78x = 3,170.66 × 1,177.30
  4. Step 4: Simplify right side
    2,113.78x = 3,732,818.02
  5. Step 5: Solve for x
    x = 3,732,818.02/2,113.78
  6. Step 6: Final answer
    x = 1,765.94

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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.