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Finding the Fourth Proportional to 3,097.42, 4,644.70 and 905.56

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Solution

The fourth proportional to 3,097.42, 4,644.70 and 905.56 is: 1,357.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.42 : 4,644.70 = 905.56 : x
  2. Step 2: Convert to fraction form
    3,097.42/4,644.70 = 905.56/x
  3. Step 3: Cross multiply
    3,097.42x = 4,644.70 × 905.56
  4. Step 4: Simplify right side
    3,097.42x = 4,206,054.53
  5. Step 5: Solve for x
    x = 4,206,054.53/3,097.42
  6. Step 6: Final answer
    x = 1,357.92

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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.