Home / 1,610.75-2,222.90-938.51

Finding the Fourth Proportional to 1,610.75, 2,222.90 and 938.51

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Solution

The fourth proportional to 1,610.75, 2,222.90 and 938.51 is: 1,295.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.75 : 2,222.90 = 938.51 : x
  2. Step 2: Convert to fraction form
    1,610.75/2,222.90 = 938.51/x
  3. Step 3: Cross multiply
    1,610.75x = 2,222.90 × 938.51
  4. Step 4: Simplify right side
    1,610.75x = 2,086,213.88
  5. Step 5: Solve for x
    x = 2,086,213.88/1,610.75
  6. Step 6: Final answer
    x = 1,295.18

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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.