Home / 3,814.28-5,263.61-2,135.76

Finding the Fourth Proportional to 3,814.28, 5,263.61 and 2,135.76

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Solution

The fourth proportional to 3,814.28, 5,263.61 and 2,135.76 is: 2,947.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,814.28 : 5,263.61 = 2,135.76 : x
  2. Step 2: Convert to fraction form
    3,814.28/5,263.61 = 2,135.76/x
  3. Step 3: Cross multiply
    3,814.28x = 5,263.61 × 2,135.76
  4. Step 4: Simplify right side
    3,814.28x = 11,241,807.69
  5. Step 5: Solve for x
    x = 11,241,807.69/3,814.28
  6. Step 6: Final answer
    x = 2,947.29

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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.