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Finding the Fourth Proportional to 3,150.65, 4,725.99 and 959.40

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Solution

The fourth proportional to 3,150.65, 4,725.99 and 959.40 is: 1,439.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.65 : 4,725.99 = 959.40 : x
  2. Step 2: Convert to fraction form
    3,150.65/4,725.99 = 959.40/x
  3. Step 3: Cross multiply
    3,150.65x = 4,725.99 × 959.40
  4. Step 4: Simplify right side
    3,150.65x = 4,534,114.81
  5. Step 5: Solve for x
    x = 4,534,114.81/3,150.65
  6. Step 6: Final answer
    x = 1,439.10

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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.