Home / 3,158.00-4,731.75-1,921.67

Finding the Fourth Proportional to 3,158.00, 4,731.75 and 1,921.67

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Solution

The fourth proportional to 3,158.00, 4,731.75 and 1,921.67 is: 2,879.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.00 : 4,731.75 = 1,921.67 : x
  2. Step 2: Convert to fraction form
    3,158.00/4,731.75 = 1,921.67/x
  3. Step 3: Cross multiply
    3,158.00x = 4,731.75 × 1,921.67
  4. Step 4: Simplify right side
    3,158.00x = 9,092,856.11
  5. Step 5: Solve for x
    x = 9,092,856.11/3,158.00
  6. Step 6: Final answer
    x = 2,879.31

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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.