Home / 7,128.72-10,672.30-4,759.44

Finding the Fourth Proportional to 7,128.72, 10,672.30 and 4,759.44

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Solution

The fourth proportional to 7,128.72, 10,672.30 and 4,759.44 is: 7,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.72 : 10,672.30 = 4,759.44 : x
  2. Step 2: Convert to fraction form
    7,128.72/10,672.30 = 4,759.44/x
  3. Step 3: Cross multiply
    7,128.72x = 10,672.30 × 4,759.44
  4. Step 4: Simplify right side
    7,128.72x = 50,794,171.51
  5. Step 5: Solve for x
    x = 50,794,171.51/7,128.72
  6. Step 6: Final answer
    x = 7,125.29

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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.