Home / 1,647.05-2,471.37-867.70

Finding the Fourth Proportional to 1,647.05, 2,471.37 and 867.70

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Solution

The fourth proportional to 1,647.05, 2,471.37 and 867.70 is: 1,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.05 : 2,471.37 = 867.70 : x
  2. Step 2: Convert to fraction form
    1,647.05/2,471.37 = 867.70/x
  3. Step 3: Cross multiply
    1,647.05x = 2,471.37 × 867.70
  4. Step 4: Simplify right side
    1,647.05x = 2,144,407.75
  5. Step 5: Solve for x
    x = 2,144,407.75/1,647.05
  6. Step 6: Final answer
    x = 1,301.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.