Home / 1,610.96-2,222.46-981.26

Finding the Fourth Proportional to 1,610.96, 2,222.46 and 981.26

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Solution

The fourth proportional to 1,610.96, 2,222.46 and 981.26 is: 1,353.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.96 : 2,222.46 = 981.26 : x
  2. Step 2: Convert to fraction form
    1,610.96/2,222.46 = 981.26/x
  3. Step 3: Cross multiply
    1,610.96x = 2,222.46 × 981.26
  4. Step 4: Simplify right side
    1,610.96x = 2,180,811.10
  5. Step 5: Solve for x
    x = 2,180,811.10/1,610.96
  6. Step 6: Final answer
    x = 1,353.73

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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.