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Finding the Fourth Proportional to 3,240.95, 4,861.51 and 901.13

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Solution

The fourth proportional to 3,240.95, 4,861.51 and 901.13 is: 1,351.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.95 : 4,861.51 = 901.13 : x
  2. Step 2: Convert to fraction form
    3,240.95/4,861.51 = 901.13/x
  3. Step 3: Cross multiply
    3,240.95x = 4,861.51 × 901.13
  4. Step 4: Simplify right side
    3,240.95x = 4,380,831.01
  5. Step 5: Solve for x
    x = 4,380,831.01/3,240.95
  6. Step 6: Final answer
    x = 1,351.71

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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.