Home / 2,058.18-2,840.58-1,311.90

Finding the Fourth Proportional to 2,058.18, 2,840.58 and 1,311.90

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Solution

The fourth proportional to 2,058.18, 2,840.58 and 1,311.90 is: 1,810.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,058.18 : 2,840.58 = 1,311.90 : x
  2. Step 2: Convert to fraction form
    2,058.18/2,840.58 = 1,311.90/x
  3. Step 3: Cross multiply
    2,058.18x = 2,840.58 × 1,311.90
  4. Step 4: Simplify right side
    2,058.18x = 3,726,556.90
  5. Step 5: Solve for x
    x = 3,726,556.90/2,058.18
  6. Step 6: Final answer
    x = 1,810.61

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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.