Home / 1,391.18-1,917.88-1,058.27

Finding the Fourth Proportional to 1,391.18, 1,917.88 and 1,058.27

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Solution

The fourth proportional to 1,391.18, 1,917.88 and 1,058.27 is: 1,458.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.18 : 1,917.88 = 1,058.27 : x
  2. Step 2: Convert to fraction form
    1,391.18/1,917.88 = 1,058.27/x
  3. Step 3: Cross multiply
    1,391.18x = 1,917.88 × 1,058.27
  4. Step 4: Simplify right side
    1,391.18x = 2,029,622.63
  5. Step 5: Solve for x
    x = 2,029,622.63/1,391.18
  6. Step 6: Final answer
    x = 1,458.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.