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Finding the Fourth Proportional to 6,646.07, 9,172.89 and 3,957.95

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Solution

The fourth proportional to 6,646.07, 9,172.89 and 3,957.95 is: 5,462.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646.07 : 9,172.89 = 3,957.95 : x
  2. Step 2: Convert to fraction form
    6,646.07/9,172.89 = 3,957.95/x
  3. Step 3: Cross multiply
    6,646.07x = 9,172.89 × 3,957.95
  4. Step 4: Simplify right side
    6,646.07x = 36,305,794.11
  5. Step 5: Solve for x
    x = 36,305,794.11/6,646.07
  6. Step 6: Final answer
    x = 5,462.75

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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.