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Finding the Fourth Proportional to 7,662.99, 10,570.95 and 5,145.97

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Solution

The fourth proportional to 7,662.99, 10,570.95 and 5,145.97 is: 7,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,662.99 : 10,570.95 = 5,145.97 : x
  2. Step 2: Convert to fraction form
    7,662.99/10,570.95 = 5,145.97/x
  3. Step 3: Cross multiply
    7,662.99x = 10,570.95 × 5,145.97
  4. Step 4: Simplify right side
    7,662.99x = 54,397,791.57
  5. Step 5: Solve for x
    x = 54,397,791.57/7,662.99
  6. Step 6: Final answer
    x = 7,098.77

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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.