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Finding the Fourth Proportional to 3,240.56, 4,860.68 and 900.54

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Solution

The fourth proportional to 3,240.56, 4,860.68 and 900.54 is: 1,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.56 : 4,860.68 = 900.54 : x
  2. Step 2: Convert to fraction form
    3,240.56/4,860.68 = 900.54/x
  3. Step 3: Cross multiply
    3,240.56x = 4,860.68 × 900.54
  4. Step 4: Simplify right side
    3,240.56x = 4,377,253.87
  5. Step 5: Solve for x
    x = 4,377,253.87/3,240.56
  6. Step 6: Final answer
    x = 1,350.77

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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.