Home / 5,490.16-8,235.92-1,791.40

Finding the Fourth Proportional to 5,490.16, 8,235.92 and 1,791.40

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Solution

The fourth proportional to 5,490.16, 8,235.92 and 1,791.40 is: 2,687.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.16 : 8,235.92 = 1,791.40 : x
  2. Step 2: Convert to fraction form
    5,490.16/8,235.92 = 1,791.40/x
  3. Step 3: Cross multiply
    5,490.16x = 8,235.92 × 1,791.40
  4. Step 4: Simplify right side
    5,490.16x = 14,753,827.09
  5. Step 5: Solve for x
    x = 14,753,827.09/5,490.16
  6. Step 6: Final answer
    x = 2,687.32

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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.