Home / 1,058.10-1,586.23-408.38

Finding the Fourth Proportional to 1,058.10, 1,586.23 and 408.38

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Solution

The fourth proportional to 1,058.10, 1,586.23 and 408.38 is: 612.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058.10 : 1,586.23 = 408.38 : x
  2. Step 2: Convert to fraction form
    1,058.10/1,586.23 = 408.38/x
  3. Step 3: Cross multiply
    1,058.10x = 1,586.23 × 408.38
  4. Step 4: Simplify right side
    1,058.10x = 647,784.61
  5. Step 5: Solve for x
    x = 647,784.61/1,058.10
  6. Step 6: Final answer
    x = 612.21

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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.