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Finding the Fourth Proportional to 7,001.85, 9,662.28 and 3,815.09

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Solution

The fourth proportional to 7,001.85, 9,662.28 and 3,815.09 is: 5,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,001.85 : 9,662.28 = 3,815.09 : x
  2. Step 2: Convert to fraction form
    7,001.85/9,662.28 = 3,815.09/x
  3. Step 3: Cross multiply
    7,001.85x = 9,662.28 × 3,815.09
  4. Step 4: Simplify right side
    7,001.85x = 36,862,467.81
  5. Step 5: Solve for x
    x = 36,862,467.81/7,001.85
  6. Step 6: Final answer
    x = 5,264.68

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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.