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Finding the Fourth Proportional to 4,928.04, 6,800.54 and 2,689.90

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Solution

The fourth proportional to 4,928.04, 6,800.54 and 2,689.90 is: 3,711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,928.04 : 6,800.54 = 2,689.90 : x
  2. Step 2: Convert to fraction form
    4,928.04/6,800.54 = 2,689.90/x
  3. Step 3: Cross multiply
    4,928.04x = 6,800.54 × 2,689.90
  4. Step 4: Simplify right side
    4,928.04x = 18,292,772.55
  5. Step 5: Solve for x
    x = 18,292,772.55/4,928.04
  6. Step 6: Final answer
    x = 3,711.98

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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.