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Finding the Fourth Proportional to 6,311.17, 8,703.50 and 4,988.04

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Solution

The fourth proportional to 6,311.17, 8,703.50 and 4,988.04 is: 6,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.17 : 8,703.50 = 4,988.04 : x
  2. Step 2: Convert to fraction form
    6,311.17/8,703.50 = 4,988.04/x
  3. Step 3: Cross multiply
    6,311.17x = 8,703.50 × 4,988.04
  4. Step 4: Simplify right side
    6,311.17x = 43,413,406.14
  5. Step 5: Solve for x
    x = 43,413,406.14/6,311.17
  6. Step 6: Final answer
    x = 6,878.82

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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.