Home / 3,605.85-5,401.89-2,140.56

Finding the Fourth Proportional to 3,605.85, 5,401.89 and 2,140.56

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Solution

The fourth proportional to 3,605.85, 5,401.89 and 2,140.56 is: 3,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.85 : 5,401.89 = 2,140.56 : x
  2. Step 2: Convert to fraction form
    3,605.85/5,401.89 = 2,140.56/x
  3. Step 3: Cross multiply
    3,605.85x = 5,401.89 × 2,140.56
  4. Step 4: Simplify right side
    3,605.85x = 11,563,069.66
  5. Step 5: Solve for x
    x = 11,563,069.66/3,605.85
  6. Step 6: Final answer
    x = 3,206.75

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1.5x scale

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.