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Finding the Fourth Proportional to 6,209.70, 9,312.93 and 2,921.10

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Solution

The fourth proportional to 6,209.70, 9,312.93 and 2,921.10 is: 4,380.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,209.70 : 9,312.93 = 2,921.10 : x
  2. Step 2: Convert to fraction form
    6,209.70/9,312.93 = 2,921.10/x
  3. Step 3: Cross multiply
    6,209.70x = 9,312.93 × 2,921.10
  4. Step 4: Simplify right side
    6,209.70x = 27,203,999.82
  5. Step 5: Solve for x
    x = 27,203,999.82/6,209.70
  6. Step 6: Final answer
    x = 4,380.89

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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.