Home / 5,145.77-7,101.16-2,787.91

Finding the Fourth Proportional to 5,145.77, 7,101.16 and 2,787.91

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Solution

The fourth proportional to 5,145.77, 7,101.16 and 2,787.91 is: 3,847.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.77 : 7,101.16 = 2,787.91 : x
  2. Step 2: Convert to fraction form
    5,145.77/7,101.16 = 2,787.91/x
  3. Step 3: Cross multiply
    5,145.77x = 7,101.16 × 2,787.91
  4. Step 4: Simplify right side
    5,145.77x = 19,797,394.98
  5. Step 5: Solve for x
    x = 19,797,394.98/5,145.77
  6. Step 6: Final answer
    x = 3,847.31

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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.