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Finding the Fourth Proportional to 7,908.08, 10,905.24 and 6,139.04

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Solution

The fourth proportional to 7,908.08, 10,905.24 and 6,139.04 is: 8,465.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.08 : 10,905.24 = 6,139.04 : x
  2. Step 2: Convert to fraction form
    7,908.08/10,905.24 = 6,139.04/x
  3. Step 3: Cross multiply
    7,908.08x = 10,905.24 × 6,139.04
  4. Step 4: Simplify right side
    7,908.08x = 66,947,704.57
  5. Step 5: Solve for x
    x = 66,947,704.57/7,908.08
  6. Step 6: Final answer
    x = 8,465.73

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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.