Home / 5,164.91-7,127.62-2,807.07

Finding the Fourth Proportional to 5,164.91, 7,127.62 and 2,807.07

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Solution

The fourth proportional to 5,164.91, 7,127.62 and 2,807.07 is: 3,873.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.91 : 7,127.62 = 2,807.07 : x
  2. Step 2: Convert to fraction form
    5,164.91/7,127.62 = 2,807.07/x
  3. Step 3: Cross multiply
    5,164.91x = 7,127.62 × 2,807.07
  4. Step 4: Simplify right side
    5,164.91x = 20,007,728.27
  5. Step 5: Solve for x
    x = 20,007,728.27/5,164.91
  6. Step 6: Final answer
    x = 3,873.78

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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.