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Finding the Fourth Proportional to 7,008.55, 9,671.67 and 3,821.87

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Solution

The fourth proportional to 7,008.55, 9,671.67 and 3,821.87 is: 5,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.55 : 9,671.67 = 3,821.87 : x
  2. Step 2: Convert to fraction form
    7,008.55/9,671.67 = 3,821.87/x
  3. Step 3: Cross multiply
    7,008.55x = 9,671.67 × 3,821.87
  4. Step 4: Simplify right side
    7,008.55x = 36,963,865.42
  5. Step 5: Solve for x
    x = 36,963,865.42/7,008.55
  6. Step 6: Final answer
    x = 5,274.11

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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.