Home / 6,516.80-9,773.40-2,621.60

Finding the Fourth Proportional to 6,516.80, 9,773.40 and 2,621.60

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Solution

The fourth proportional to 6,516.80, 9,773.40 and 2,621.60 is: 3,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.80 : 9,773.40 = 2,621.60 : x
  2. Step 2: Convert to fraction form
    6,516.80/9,773.40 = 2,621.60/x
  3. Step 3: Cross multiply
    6,516.80x = 9,773.40 × 2,621.60
  4. Step 4: Simplify right side
    6,516.80x = 25,621,945.44
  5. Step 5: Solve for x
    x = 25,621,945.44/6,516.80
  6. Step 6: Final answer
    x = 3,931.68

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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.