Home / 3,931.78-5,426.68-2,253.46

Finding the Fourth Proportional to 3,931.78, 5,426.68 and 2,253.46

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Solution

The fourth proportional to 3,931.78, 5,426.68 and 2,253.46 is: 3,110.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.78 : 5,426.68 = 2,253.46 : x
  2. Step 2: Convert to fraction form
    3,931.78/5,426.68 = 2,253.46/x
  3. Step 3: Cross multiply
    3,931.78x = 5,426.68 × 2,253.46
  4. Step 4: Simplify right side
    3,931.78x = 12,228,806.31
  5. Step 5: Solve for x
    x = 12,228,806.31/3,931.78
  6. Step 6: Final answer
    x = 3,110.25

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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.