Home / 3,611.96-4,979.40-2,816.36

Finding the Fourth Proportional to 3,611.96, 4,979.40 and 2,816.36

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Solution

The fourth proportional to 3,611.96, 4,979.40 and 2,816.36 is: 3,882.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.96 : 4,979.40 = 2,816.36 : x
  2. Step 2: Convert to fraction form
    3,611.96/4,979.40 = 2,816.36/x
  3. Step 3: Cross multiply
    3,611.96x = 4,979.40 × 2,816.36
  4. Step 4: Simplify right side
    3,611.96x = 14,023,782.98
  5. Step 5: Solve for x
    x = 14,023,782.98/3,611.96
  6. Step 6: Final answer
    x = 3,882.60

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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.