Home / 2,811.28-3,882.07-1,750.87

Finding the Fourth Proportional to 2,811.28, 3,882.07 and 1,750.87

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Solution

The fourth proportional to 2,811.28, 3,882.07 and 1,750.87 is: 2,417.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.28 : 3,882.07 = 1,750.87 : x
  2. Step 2: Convert to fraction form
    2,811.28/3,882.07 = 1,750.87/x
  3. Step 3: Cross multiply
    2,811.28x = 3,882.07 × 1,750.87
  4. Step 4: Simplify right side
    2,811.28x = 6,796,971.74
  5. Step 5: Solve for x
    x = 6,796,971.74/2,811.28
  6. Step 6: Final answer
    x = 2,417.75

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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.