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Finding the Fourth Proportional to 6,620.65, 9,931.25 and 2,922.03

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Solution

The fourth proportional to 6,620.65, 9,931.25 and 2,922.03 is: 4,383.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,620.65 : 9,931.25 = 2,922.03 : x
  2. Step 2: Convert to fraction form
    6,620.65/9,931.25 = 2,922.03/x
  3. Step 3: Cross multiply
    6,620.65x = 9,931.25 × 2,922.03
  4. Step 4: Simplify right side
    6,620.65x = 29,019,417.74
  5. Step 5: Solve for x
    x = 29,019,417.74/6,620.65
  6. Step 6: Final answer
    x = 4,383.17

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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.