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Finding the Fourth Proportional to 6,957.36, 9,600.80 and 4,127.92

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Solution

The fourth proportional to 6,957.36, 9,600.80 and 4,127.92 is: 5,696.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,957.36 : 9,600.80 = 4,127.92 : x
  2. Step 2: Convert to fraction form
    6,957.36/9,600.80 = 4,127.92/x
  3. Step 3: Cross multiply
    6,957.36x = 9,600.80 × 4,127.92
  4. Step 4: Simplify right side
    6,957.36x = 39,631,289.69
  5. Step 5: Solve for x
    x = 39,631,289.69/6,957.36
  6. Step 6: Final answer
    x = 5,696.31

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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.