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Finding the Fourth Proportional to 5,687.19, 7,848.21 and 3,169.51

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Solution

The fourth proportional to 5,687.19, 7,848.21 and 3,169.51 is: 4,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.19 : 7,848.21 = 3,169.51 : x
  2. Step 2: Convert to fraction form
    5,687.19/7,848.21 = 3,169.51/x
  3. Step 3: Cross multiply
    5,687.19x = 7,848.21 × 3,169.51
  4. Step 4: Simplify right side
    5,687.19x = 24,874,980.08
  5. Step 5: Solve for x
    x = 24,874,980.08/5,687.19
  6. Step 6: Final answer
    x = 4,373.86

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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.