Home / 3,936.28-5,434.68-3,038.40

Finding the Fourth Proportional to 3,936.28, 5,434.68 and 3,038.40

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Solution

The fourth proportional to 3,936.28, 5,434.68 and 3,038.40 is: 4,195.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.28 : 5,434.68 = 3,038.40 : x
  2. Step 2: Convert to fraction form
    3,936.28/5,434.68 = 3,038.40/x
  3. Step 3: Cross multiply
    3,936.28x = 5,434.68 × 3,038.40
  4. Step 4: Simplify right side
    3,936.28x = 16,512,731.71
  5. Step 5: Solve for x
    x = 16,512,731.71/3,936.28
  6. Step 6: Final answer
    x = 4,195.01

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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.