Home / 5,816.56-8,725.80-1,921.20

Finding the Fourth Proportional to 5,816.56, 8,725.80 and 1,921.20

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Solution

The fourth proportional to 5,816.56, 8,725.80 and 1,921.20 is: 2,882.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816.56 : 8,725.80 = 1,921.20 : x
  2. Step 2: Convert to fraction form
    5,816.56/8,725.80 = 1,921.20/x
  3. Step 3: Cross multiply
    5,816.56x = 8,725.80 × 1,921.20
  4. Step 4: Simplify right side
    5,816.56x = 16,764,006.96
  5. Step 5: Solve for x
    x = 16,764,006.96/5,816.56
  6. Step 6: Final answer
    x = 2,882.12

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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.