Home / 7,715.70-11,573.55-1,872.31

Finding the Fourth Proportional to 7,715.70, 11,573.55 and 1,872.31

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Solution

The fourth proportional to 7,715.70, 11,573.55 and 1,872.31 is: 2,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.70 : 11,573.55 = 1,872.31 : x
  2. Step 2: Convert to fraction form
    7,715.70/11,573.55 = 1,872.31/x
  3. Step 3: Cross multiply
    7,715.70x = 11,573.55 × 1,872.31
  4. Step 4: Simplify right side
    7,715.70x = 21,669,273.40
  5. Step 5: Solve for x
    x = 21,669,273.40/7,715.70
  6. Step 6: Final answer
    x = 2,808.47

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Similar ratio
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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.