Home / 7,715.61-11,573.44-1,872.21

Finding the Fourth Proportional to 7,715.61, 11,573.44 and 1,872.21

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Solution

The fourth proportional to 7,715.61, 11,573.44 and 1,872.21 is: 2,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.61 : 11,573.44 = 1,872.21 : x
  2. Step 2: Convert to fraction form
    7,715.61/11,573.44 = 1,872.21/x
  3. Step 3: Cross multiply
    7,715.61x = 11,573.44 × 1,872.21
  4. Step 4: Simplify right side
    7,715.61x = 21,667,910.10
  5. Step 5: Solve for x
    x = 21,667,910.10/7,715.61
  6. Step 6: Final answer
    x = 2,808.32

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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.