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Finding the Fourth Proportional to 4,871.16, 7,306.08 and 2,918.64

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Solution

The fourth proportional to 4,871.16, 7,306.08 and 2,918.64 is: 4,377.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,871.16 : 7,306.08 = 2,918.64 : x
  2. Step 2: Convert to fraction form
    4,871.16/7,306.08 = 2,918.64/x
  3. Step 3: Cross multiply
    4,871.16x = 7,306.08 × 2,918.64
  4. Step 4: Simplify right side
    4,871.16x = 21,323,817.33
  5. Step 5: Solve for x
    x = 21,323,817.33/4,871.16
  6. Step 6: Final answer
    x = 4,377.56

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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.