Home / 2,101.12-3,148.40-1,330

Finding the Fourth Proportional to 2,101.12, 3,148.40 and 1,330

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Solution

The fourth proportional to 2,101.12, 3,148.40 and 1,330 is: 1,992.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.12 : 3,148.40 = 1,330 : x
  2. Step 2: Convert to fraction form
    2,101.12/3,148.40 = 1,330/x
  3. Step 3: Cross multiply
    2,101.12x = 3,148.40 × 1,330
  4. Step 4: Simplify right side
    2,101.12x = 4,187,372
  5. Step 5: Solve for x
    x = 4,187,372/2,101.12
  6. Step 6: Final answer
    x = 1,992.92

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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.