Home / 2,163.38-2,985.98-1,324.78

Finding the Fourth Proportional to 2,163.38, 2,985.98 and 1,324.78

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Solution

The fourth proportional to 2,163.38, 2,985.98 and 1,324.78 is: 1,828.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.38 : 2,985.98 = 1,324.78 : x
  2. Step 2: Convert to fraction form
    2,163.38/2,985.98 = 1,324.78/x
  3. Step 3: Cross multiply
    2,163.38x = 2,985.98 × 1,324.78
  4. Step 4: Simplify right side
    2,163.38x = 3,955,752.50
  5. Step 5: Solve for x
    x = 3,955,752.50/2,163.38
  6. Step 6: Final answer
    x = 1,828.51

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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.