Home / 3,674.68-5,515.62-1,921.40

Finding the Fourth Proportional to 3,674.68, 5,515.62 and 1,921.40

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Solution

The fourth proportional to 3,674.68, 5,515.62 and 1,921.40 is: 2,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674.68 : 5,515.62 = 1,921.40 : x
  2. Step 2: Convert to fraction form
    3,674.68/5,515.62 = 1,921.40/x
  3. Step 3: Cross multiply
    3,674.68x = 5,515.62 × 1,921.40
  4. Step 4: Simplify right side
    3,674.68x = 10,597,712.27
  5. Step 5: Solve for x
    x = 10,597,712.27/3,674.68
  6. Step 6: Final answer
    x = 2,883.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.