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Finding the Fourth Proportional to 6,939.60, 10,393.92 and 5,368.92

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Solution

The fourth proportional to 6,939.60, 10,393.92 and 5,368.92 is: 8,041.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.60 : 10,393.92 = 5,368.92 : x
  2. Step 2: Convert to fraction form
    6,939.60/10,393.92 = 5,368.92/x
  3. Step 3: Cross multiply
    6,939.60x = 10,393.92 × 5,368.92
  4. Step 4: Simplify right side
    6,939.60x = 55,804,124.97
  5. Step 5: Solve for x
    x = 55,804,124.97/6,939.60
  6. Step 6: Final answer
    x = 8,041.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.