Home / 1,811.87-2,500.01-1,251.45

Finding the Fourth Proportional to 1,811.87, 2,500.01 and 1,251.45

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Solution

The fourth proportional to 1,811.87, 2,500.01 and 1,251.45 is: 1,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.87 : 2,500.01 = 1,251.45 : x
  2. Step 2: Convert to fraction form
    1,811.87/2,500.01 = 1,251.45/x
  3. Step 3: Cross multiply
    1,811.87x = 2,500.01 × 1,251.45
  4. Step 4: Simplify right side
    1,811.87x = 3,128,642.99
  5. Step 5: Solve for x
    x = 3,128,642.99/1,811.87
  6. Step 6: Final answer
    x = 1,726.75

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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.