Home / 1,215.72-1,823.58-557.31

Finding the Fourth Proportional to 1,215.72, 1,823.58 and 557.31

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Solution

The fourth proportional to 1,215.72, 1,823.58 and 557.31 is: 835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.72 : 1,823.58 = 557.31 : x
  2. Step 2: Convert to fraction form
    1,215.72/1,823.58 = 557.31/x
  3. Step 3: Cross multiply
    1,215.72x = 1,823.58 × 557.31
  4. Step 4: Simplify right side
    1,215.72x = 1,016,299.37
  5. Step 5: Solve for x
    x = 1,016,299.37/1,215.72
  6. Step 6: Final answer
    x = 835.97

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Similar ratio
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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.