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Finding the Fourth Proportional to 6,651.62, 9,174.56 and 5,718.50

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Solution

The fourth proportional to 6,651.62, 9,174.56 and 5,718.50 is: 7,887.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,651.62 : 9,174.56 = 5,718.50 : x
  2. Step 2: Convert to fraction form
    6,651.62/9,174.56 = 5,718.50/x
  3. Step 3: Cross multiply
    6,651.62x = 9,174.56 × 5,718.50
  4. Step 4: Simplify right side
    6,651.62x = 52,464,721.36
  5. Step 5: Solve for x
    x = 52,464,721.36/6,651.62
  6. Step 6: Final answer
    x = 7,887.51

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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.