Home / 1,058.24-1,586.94-408.56

Finding the Fourth Proportional to 1,058.24, 1,586.94 and 408.56

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Solution

The fourth proportional to 1,058.24, 1,586.94 and 408.56 is: 612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.24 : 1,586.94 = 408.56 : x
  2. Step 2: Convert to fraction form
    1,058.24/1,586.94 = 408.56/x
  3. Step 3: Cross multiply
    1,058.24x = 1,586.94 × 408.56
  4. Step 4: Simplify right side
    1,058.24x = 648,360.21
  5. Step 5: Solve for x
    x = 648,360.21/1,058.24
  6. Step 6: Final answer
    x = 612.68

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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.