Home / 3,901.78-5,384.30-2,133.45

Finding the Fourth Proportional to 3,901.78, 5,384.30 and 2,133.45

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Solution

The fourth proportional to 3,901.78, 5,384.30 and 2,133.45 is: 2,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.78 : 5,384.30 = 2,133.45 : x
  2. Step 2: Convert to fraction form
    3,901.78/5,384.30 = 2,133.45/x
  3. Step 3: Cross multiply
    3,901.78x = 5,384.30 × 2,133.45
  4. Step 4: Simplify right side
    3,901.78x = 11,487,134.84
  5. Step 5: Solve for x
    x = 11,487,134.84/3,901.78
  6. Step 6: Final answer
    x = 2,944.08

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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.