Home / 5,165.16-7,127.68-2,807.24

Finding the Fourth Proportional to 5,165.16, 7,127.68 and 2,807.24

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Solution

The fourth proportional to 5,165.16, 7,127.68 and 2,807.24 is: 3,873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,165.16 : 7,127.68 = 2,807.24 : x
  2. Step 2: Convert to fraction form
    5,165.16/7,127.68 = 2,807.24/x
  3. Step 3: Cross multiply
    5,165.16x = 7,127.68 × 2,807.24
  4. Step 4: Simplify right side
    5,165.16x = 20,009,108.40
  5. Step 5: Solve for x
    x = 20,009,108.40/5,165.16
  6. Step 6: Final answer
    x = 3,873.86

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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.