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Finding the Fourth Proportional to 6,387.64, 8,813.04 and 4,030.54

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Solution

The fourth proportional to 6,387.64, 8,813.04 and 4,030.54 is: 5,560.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.64 : 8,813.04 = 4,030.54 : x
  2. Step 2: Convert to fraction form
    6,387.64/8,813.04 = 4,030.54/x
  3. Step 3: Cross multiply
    6,387.64x = 8,813.04 × 4,030.54
  4. Step 4: Simplify right side
    6,387.64x = 35,521,310.24
  5. Step 5: Solve for x
    x = 35,521,310.24/6,387.64
  6. Step 6: Final answer
    x = 5,560.94

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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.