Home / 3,807.19-5,253.35-2,128.42

Finding the Fourth Proportional to 3,807.19, 5,253.35 and 2,128.42

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Solution

The fourth proportional to 3,807.19, 5,253.35 and 2,128.42 is: 2,936.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,807.19 : 5,253.35 = 2,128.42 : x
  2. Step 2: Convert to fraction form
    3,807.19/5,253.35 = 2,128.42/x
  3. Step 3: Cross multiply
    3,807.19x = 5,253.35 × 2,128.42
  4. Step 4: Simplify right side
    3,807.19x = 11,181,335.21
  5. Step 5: Solve for x
    x = 11,181,335.21/3,807.19
  6. Step 6: Final answer
    x = 2,936.90

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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.