Home / 3,811.87-5,260.13-2,132.99

Finding the Fourth Proportional to 3,811.87, 5,260.13 and 2,132.99

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Solution

The fourth proportional to 3,811.87, 5,260.13 and 2,132.99 is: 2,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.87 : 5,260.13 = 2,132.99 : x
  2. Step 2: Convert to fraction form
    3,811.87/5,260.13 = 2,132.99/x
  3. Step 3: Cross multiply
    3,811.87x = 5,260.13 × 2,132.99
  4. Step 4: Simplify right side
    3,811.87x = 11,219,807.45
  5. Step 5: Solve for x
    x = 11,219,807.45/3,811.87
  6. Step 6: Final answer
    x = 2,943.39

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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.