Home / 6,399.28-9,599.40-2,181.22

Finding the Fourth Proportional to 6,399.28, 9,599.40 and 2,181.22

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Solution

The fourth proportional to 6,399.28, 9,599.40 and 2,181.22 is: 3,271.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,399.28 : 9,599.40 = 2,181.22 : x
  2. Step 2: Convert to fraction form
    6,399.28/9,599.40 = 2,181.22/x
  3. Step 3: Cross multiply
    6,399.28x = 9,599.40 × 2,181.22
  4. Step 4: Simplify right side
    6,399.28x = 20,938,379.27
  5. Step 5: Solve for x
    x = 20,938,379.27/6,399.28
  6. Step 6: Final answer
    x = 3,271.99

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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.