Home / 1,618.28-2,231.70-1,088.36

Finding the Fourth Proportional to 1,618.28, 2,231.70 and 1,088.36

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Solution

The fourth proportional to 1,618.28, 2,231.70 and 1,088.36 is: 1,500.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.28 : 2,231.70 = 1,088.36 : x
  2. Step 2: Convert to fraction form
    1,618.28/2,231.70 = 1,088.36/x
  3. Step 3: Cross multiply
    1,618.28x = 2,231.70 × 1,088.36
  4. Step 4: Simplify right side
    1,618.28x = 2,428,893.01
  5. Step 5: Solve for x
    x = 2,428,893.01/1,618.28
  6. Step 6: Final answer
    x = 1,500.91

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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.