Home / 6,897.47-9,516.83-3,912.75

Finding the Fourth Proportional to 6,897.47, 9,516.83 and 3,912.75

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Solution

The fourth proportional to 6,897.47, 9,516.83 and 3,912.75 is: 5,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,897.47 : 9,516.83 = 3,912.75 : x
  2. Step 2: Convert to fraction form
    6,897.47/9,516.83 = 3,912.75/x
  3. Step 3: Cross multiply
    6,897.47x = 9,516.83 × 3,912.75
  4. Step 4: Simplify right side
    6,897.47x = 37,236,957.02
  5. Step 5: Solve for x
    x = 37,236,957.02/6,897.47
  6. Step 6: Final answer
    x = 5,398.64

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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.