Home / 7,715.72-11,573.62-1,872.33

Finding the Fourth Proportional to 7,715.72, 11,573.62 and 1,872.33

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Solution

The fourth proportional to 7,715.72, 11,573.62 and 1,872.33 is: 2,808.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.72 : 11,573.62 = 1,872.33 : x
  2. Step 2: Convert to fraction form
    7,715.72/11,573.62 = 1,872.33/x
  3. Step 3: Cross multiply
    7,715.72x = 11,573.62 × 1,872.33
  4. Step 4: Simplify right side
    7,715.72x = 21,669,673.42
  5. Step 5: Solve for x
    x = 21,669,673.42/7,715.72
  6. Step 6: Final answer
    x = 2,808.51

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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.