Home / 4,245.72-5,857.48-3,129.32

Finding the Fourth Proportional to 4,245.72, 5,857.48 and 3,129.32

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Solution

The fourth proportional to 4,245.72, 5,857.48 and 3,129.32 is: 4,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245.72 : 5,857.48 = 3,129.32 : x
  2. Step 2: Convert to fraction form
    4,245.72/5,857.48 = 3,129.32/x
  3. Step 3: Cross multiply
    4,245.72x = 5,857.48 × 3,129.32
  4. Step 4: Simplify right side
    4,245.72x = 18,329,947.87
  5. Step 5: Solve for x
    x = 18,329,947.87/4,245.72
  6. Step 6: Final answer
    x = 4,317.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.