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Finding the Fourth Proportional to 8,104.79, 11,184.59 and 4,378.79

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Solution

The fourth proportional to 8,104.79, 11,184.59 and 4,378.79 is: 6,042.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,104.79 : 11,184.59 = 4,378.79 : x
  2. Step 2: Convert to fraction form
    8,104.79/11,184.59 = 4,378.79/x
  3. Step 3: Cross multiply
    8,104.79x = 11,184.59 × 4,378.79
  4. Step 4: Simplify right side
    8,104.79x = 48,975,009.75
  5. Step 5: Solve for x
    x = 48,975,009.75/8,104.79
  6. Step 6: Final answer
    x = 6,042.72

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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.