Home / 1,667.11-2,500.75-1,422.02

Finding the Fourth Proportional to 1,667.11, 2,500.75 and 1,422.02

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Solution

The fourth proportional to 1,667.11, 2,500.75 and 1,422.02 is: 2,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,667.11 : 2,500.75 = 1,422.02 : x
  2. Step 2: Convert to fraction form
    1,667.11/2,500.75 = 1,422.02/x
  3. Step 3: Cross multiply
    1,667.11x = 2,500.75 × 1,422.02
  4. Step 4: Simplify right side
    1,667.11x = 3,556,109.99
  5. Step 5: Solve for x
    x = 3,556,109.99/1,667.11
  6. Step 6: Final answer
    x = 2,133.10

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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.