Home / 4,911.06-7,367.92-1,991.40

Finding the Fourth Proportional to 4,911.06, 7,367.92 and 1,991.40

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Solution

The fourth proportional to 4,911.06, 7,367.92 and 1,991.40 is: 2,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,911.06 : 7,367.92 = 1,991.40 : x
  2. Step 2: Convert to fraction form
    4,911.06/7,367.92 = 1,991.40/x
  3. Step 3: Cross multiply
    4,911.06x = 7,367.92 × 1,991.40
  4. Step 4: Simplify right side
    4,911.06x = 14,672,475.89
  5. Step 5: Solve for x
    x = 14,672,475.89/4,911.06
  6. Step 6: Final answer
    x = 2,987.64

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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.