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Finding the Fourth Proportional to 1,610.37, 2,222.25 and 911.76

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Solution

The fourth proportional to 1,610.37, 2,222.25 and 911.76 is: 1,258.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.37 : 2,222.25 = 911.76 : x
  2. Step 2: Convert to fraction form
    1,610.37/2,222.25 = 911.76/x
  3. Step 3: Cross multiply
    1,610.37x = 2,222.25 × 911.76
  4. Step 4: Simplify right side
    1,610.37x = 2,026,158.66
  5. Step 5: Solve for x
    x = 2,026,158.66/1,610.37
  6. Step 6: Final answer
    x = 1,258.19

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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.