Home / 1,489.36-2,224.01-1,215.98

Finding the Fourth Proportional to 1,489.36, 2,224.01 and 1,215.98

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Solution

The fourth proportional to 1,489.36, 2,224.01 and 1,215.98 is: 1,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.36 : 2,224.01 = 1,215.98 : x
  2. Step 2: Convert to fraction form
    1,489.36/2,224.01 = 1,215.98/x
  3. Step 3: Cross multiply
    1,489.36x = 2,224.01 × 1,215.98
  4. Step 4: Simplify right side
    1,489.36x = 2,704,355.72
  5. Step 5: Solve for x
    x = 2,704,355.72/1,489.36
  6. Step 6: Final answer
    x = 1,815.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.