Home / 7,912.96-11,865.49-2,646.14

Finding the Fourth Proportional to 7,912.96, 11,865.49 and 2,646.14

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Solution

The fourth proportional to 7,912.96, 11,865.49 and 2,646.14 is: 3,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.96 : 11,865.49 = 2,646.14 : x
  2. Step 2: Convert to fraction form
    7,912.96/11,865.49 = 2,646.14/x
  3. Step 3: Cross multiply
    7,912.96x = 11,865.49 × 2,646.14
  4. Step 4: Simplify right side
    7,912.96x = 31,397,681.77
  5. Step 5: Solve for x
    x = 31,397,681.77/7,912.96
  6. Step 6: Final answer
    x = 3,967.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.