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Finding the Fourth Proportional to 5,918.21, 8,868.86 and 4,345.88

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Solution

The fourth proportional to 5,918.21, 8,868.86 and 4,345.88 is: 6,512.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.21 : 8,868.86 = 4,345.88 : x
  2. Step 2: Convert to fraction form
    5,918.21/8,868.86 = 4,345.88/x
  3. Step 3: Cross multiply
    5,918.21x = 8,868.86 × 4,345.88
  4. Step 4: Simplify right side
    5,918.21x = 38,543,001.41
  5. Step 5: Solve for x
    x = 38,543,001.41/5,918.21
  6. Step 6: Final answer
    x = 6,512.61

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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.