Home / 2,929.91-4,394.40-1,081.90

Finding the Fourth Proportional to 2,929.91, 4,394.40 and 1,081.90

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Solution

The fourth proportional to 2,929.91, 4,394.40 and 1,081.90 is: 1,622.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.91 : 4,394.40 = 1,081.90 : x
  2. Step 2: Convert to fraction form
    2,929.91/4,394.40 = 1,081.90/x
  3. Step 3: Cross multiply
    2,929.91x = 4,394.40 × 1,081.90
  4. Step 4: Simplify right side
    2,929.91x = 4,754,284.96
  5. Step 5: Solve for x
    x = 4,754,284.96/2,929.91
  6. Step 6: Final answer
    x = 1,622.67

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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.