Home / 5,164.90-7,127.39-2,807.06

Finding the Fourth Proportional to 5,164.90, 7,127.39 and 2,807.06

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Solution

The fourth proportional to 5,164.90, 7,127.39 and 2,807.06 is: 3,873.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,164.90 : 7,127.39 = 2,807.06 : x
  2. Step 2: Convert to fraction form
    5,164.90/7,127.39 = 2,807.06/x
  3. Step 3: Cross multiply
    5,164.90x = 7,127.39 × 2,807.06
  4. Step 4: Simplify right side
    5,164.90x = 20,006,982.75
  5. Step 5: Solve for x
    x = 20,006,982.75/5,164.90
  6. Step 6: Final answer
    x = 3,873.65

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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.