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Finding the Fourth Proportional to 7,350.75, 10,143.75 and 3,993.50

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Solution

The fourth proportional to 7,350.75, 10,143.75 and 3,993.50 is: 5,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350.75 : 10,143.75 = 3,993.50 : x
  2. Step 2: Convert to fraction form
    7,350.75/10,143.75 = 3,993.50/x
  3. Step 3: Cross multiply
    7,350.75x = 10,143.75 × 3,993.50
  4. Step 4: Simplify right side
    7,350.75x = 40,509,065.63
  5. Step 5: Solve for x
    x = 40,509,065.63/7,350.75
  6. Step 6: Final answer
    x = 5,510.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.