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Finding the Fourth Proportional to 7,007.89, 9,670.82 and 3,821.18

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Solution

The fourth proportional to 7,007.89, 9,670.82 and 3,821.18 is: 5,273.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,007.89 : 9,670.82 = 3,821.18 : x
  2. Step 2: Convert to fraction form
    7,007.89/9,670.82 = 3,821.18/x
  3. Step 3: Cross multiply
    7,007.89x = 9,670.82 × 3,821.18
  4. Step 4: Simplify right side
    7,007.89x = 36,953,943.97
  5. Step 5: Solve for x
    x = 36,953,943.97/7,007.89
  6. Step 6: Final answer
    x = 5,273.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.