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Finding the Fourth Proportional to 8,179.46, 11,289.84 and 5,038.28

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Solution

The fourth proportional to 8,179.46, 11,289.84 and 5,038.28 is: 6,954.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.46 : 11,289.84 = 5,038.28 : x
  2. Step 2: Convert to fraction form
    8,179.46/11,289.84 = 5,038.28/x
  3. Step 3: Cross multiply
    8,179.46x = 11,289.84 × 5,038.28
  4. Step 4: Simplify right side
    8,179.46x = 56,881,375.08
  5. Step 5: Solve for x
    x = 56,881,375.08/8,179.46
  6. Step 6: Final answer
    x = 6,954.17

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1.5x scale

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.