Home / 5,139.20-7,712.16-2,832.32

Finding the Fourth Proportional to 5,139.20, 7,712.16 and 2,832.32

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Solution

The fourth proportional to 5,139.20, 7,712.16 and 2,832.32 is: 4,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.20 : 7,712.16 = 2,832.32 : x
  2. Step 2: Convert to fraction form
    5,139.20/7,712.16 = 2,832.32/x
  3. Step 3: Cross multiply
    5,139.20x = 7,712.16 × 2,832.32
  4. Step 4: Simplify right side
    5,139.20x = 21,843,305.01
  5. Step 5: Solve for x
    x = 21,843,305.01/5,139.20
  6. Step 6: Final answer
    x = 4,250.33

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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.