Home / 4,755.21-7,129.17-2,907.20

Finding the Fourth Proportional to 4,755.21, 7,129.17 and 2,907.20

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Solution

The fourth proportional to 4,755.21, 7,129.17 and 2,907.20 is: 4,358.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,755.21 : 7,129.17 = 2,907.20 : x
  2. Step 2: Convert to fraction form
    4,755.21/7,129.17 = 2,907.20/x
  3. Step 3: Cross multiply
    4,755.21x = 7,129.17 × 2,907.20
  4. Step 4: Simplify right side
    4,755.21x = 20,725,887.38
  5. Step 5: Solve for x
    x = 20,725,887.38/4,755.21
  6. Step 6: Final answer
    x = 4,358.56

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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.