Home / 1,215.23-1,822.85-1,007.87

Finding the Fourth Proportional to 1,215.23, 1,822.85 and 1,007.87

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Solution

The fourth proportional to 1,215.23, 1,822.85 and 1,007.87 is: 1,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.23 : 1,822.85 = 1,007.87 : x
  2. Step 2: Convert to fraction form
    1,215.23/1,822.85 = 1,007.87/x
  3. Step 3: Cross multiply
    1,215.23x = 1,822.85 × 1,007.87
  4. Step 4: Simplify right side
    1,215.23x = 1,837,190.79
  5. Step 5: Solve for x
    x = 1,837,190.79/1,215.23
  6. Step 6: Final answer
    x = 1,511.81

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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.