Home / 2,087.28-2,882.81-1,422.99

Finding the Fourth Proportional to 2,087.28, 2,882.81 and 1,422.99

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Solution

The fourth proportional to 2,087.28, 2,882.81 and 1,422.99 is: 1,965.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.28 : 2,882.81 = 1,422.99 : x
  2. Step 2: Convert to fraction form
    2,087.28/2,882.81 = 1,422.99/x
  3. Step 3: Cross multiply
    2,087.28x = 2,882.81 × 1,422.99
  4. Step 4: Simplify right side
    2,087.28x = 4,102,209.80
  5. Step 5: Solve for x
    x = 4,102,209.80/2,087.28
  6. Step 6: Final answer
    x = 1,965.34

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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.