Home / 3,491.48-4,813.56-2,991.96

Finding the Fourth Proportional to 3,491.48, 4,813.56 and 2,991.96

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Solution

The fourth proportional to 3,491.48, 4,813.56 and 2,991.96 is: 4,124.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.48 : 4,813.56 = 2,991.96 : x
  2. Step 2: Convert to fraction form
    3,491.48/4,813.56 = 2,991.96/x
  3. Step 3: Cross multiply
    3,491.48x = 4,813.56 × 2,991.96
  4. Step 4: Simplify right side
    3,491.48x = 14,401,978.98
  5. Step 5: Solve for x
    x = 14,401,978.98/3,491.48
  6. Step 6: Final answer
    x = 4,124.89

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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.