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Finding the Fourth Proportional to 6,990.72, 10,490.94 and 4,801.56

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Solution

The fourth proportional to 6,990.72, 10,490.94 and 4,801.56 is: 7,205.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.72 : 10,490.94 = 4,801.56 : x
  2. Step 2: Convert to fraction form
    6,990.72/10,490.94 = 4,801.56/x
  3. Step 3: Cross multiply
    6,990.72x = 10,490.94 × 4,801.56
  4. Step 4: Simplify right side
    6,990.72x = 50,372,877.87
  5. Step 5: Solve for x
    x = 50,372,877.87/6,990.72
  6. Step 6: Final answer
    x = 7,205.68

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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.