Home / 4,751.20-7,125.94-1,287.64

Finding the Fourth Proportional to 4,751.20, 7,125.94 and 1,287.64

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Solution

The fourth proportional to 4,751.20, 7,125.94 and 1,287.64 is: 1,931.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.20 : 7,125.94 = 1,287.64 : x
  2. Step 2: Convert to fraction form
    4,751.20/7,125.94 = 1,287.64/x
  3. Step 3: Cross multiply
    4,751.20x = 7,125.94 × 1,287.64
  4. Step 4: Simplify right side
    4,751.20x = 9,175,645.38
  5. Step 5: Solve for x
    x = 9,175,645.38/4,751.20
  6. Step 6: Final answer
    x = 1,931.23

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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.