Home / 6,386.72-9,576.84-2,921

Finding the Fourth Proportional to 6,386.72, 9,576.84 and 2,921

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Solution

The fourth proportional to 6,386.72, 9,576.84 and 2,921 is: 4,380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.72 : 9,576.84 = 2,921 : x
  2. Step 2: Convert to fraction form
    6,386.72/9,576.84 = 2,921/x
  3. Step 3: Cross multiply
    6,386.72x = 9,576.84 × 2,921
  4. Step 4: Simplify right side
    6,386.72x = 27,973,949.64
  5. Step 5: Solve for x
    x = 27,973,949.64/6,386.72
  6. Step 6: Final answer
    x = 4,380.02

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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.