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Finding the Fourth Proportional to 3,150.30, 4,724.61 and 959.05

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Solution

The fourth proportional to 3,150.30, 4,724.61 and 959.05 is: 1,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.30 : 4,724.61 = 959.05 : x
  2. Step 2: Convert to fraction form
    3,150.30/4,724.61 = 959.05/x
  3. Step 3: Cross multiply
    3,150.30x = 4,724.61 × 959.05
  4. Step 4: Simplify right side
    3,150.30x = 4,531,137.22
  5. Step 5: Solve for x
    x = 4,531,137.22/3,150.30
  6. Step 6: Final answer
    x = 1,438.32

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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.