Home / 3,847.50-5,309.56-2,191.50

Finding the Fourth Proportional to 3,847.50, 5,309.56 and 2,191.50

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Solution

The fourth proportional to 3,847.50, 5,309.56 and 2,191.50 is: 3,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.50 : 5,309.56 = 2,191.50 : x
  2. Step 2: Convert to fraction form
    3,847.50/5,309.56 = 2,191.50/x
  3. Step 3: Cross multiply
    3,847.50x = 5,309.56 × 2,191.50
  4. Step 4: Simplify right side
    3,847.50x = 11,635,900.74
  5. Step 5: Solve for x
    x = 11,635,900.74/3,847.50
  6. Step 6: Final answer
    x = 3,024.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.