Home / 5,165.10-7,127.82-2,807.28

Finding the Fourth Proportional to 5,165.10, 7,127.82 and 2,807.28

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Solution

The fourth proportional to 5,165.10, 7,127.82 and 2,807.28 is: 3,874.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.10 : 7,127.82 = 2,807.28 : x
  2. Step 2: Convert to fraction form
    5,165.10/7,127.82 = 2,807.28/x
  3. Step 3: Cross multiply
    5,165.10x = 7,127.82 × 2,807.28
  4. Step 4: Simplify right side
    5,165.10x = 20,009,786.53
  5. Step 5: Solve for x
    x = 20,009,786.53/5,165.10
  6. Step 6: Final answer
    x = 3,874.04

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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.