Home / 5,165.20-7,127.62-2,807.29

Finding the Fourth Proportional to 5,165.20, 7,127.62 and 2,807.29

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Solution

The fourth proportional to 5,165.20, 7,127.62 and 2,807.29 is: 3,873.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.20 : 7,127.62 = 2,807.29 : x
  2. Step 2: Convert to fraction form
    5,165.20/7,127.62 = 2,807.29/x
  3. Step 3: Cross multiply
    5,165.20x = 7,127.62 × 2,807.29
  4. Step 4: Simplify right side
    5,165.20x = 20,009,296.35
  5. Step 5: Solve for x
    x = 20,009,296.35/5,165.20
  6. Step 6: Final answer
    x = 3,873.87

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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.