Home / 2,715.72-3,747.66-1,653.78

Finding the Fourth Proportional to 2,715.72, 3,747.66 and 1,653.78

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Solution

The fourth proportional to 2,715.72, 3,747.66 and 1,653.78 is: 2,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.72 : 3,747.66 = 1,653.78 : x
  2. Step 2: Convert to fraction form
    2,715.72/3,747.66 = 1,653.78/x
  3. Step 3: Cross multiply
    2,715.72x = 3,747.66 × 1,653.78
  4. Step 4: Simplify right side
    2,715.72x = 6,197,805.15
  5. Step 5: Solve for x
    x = 6,197,805.15/2,715.72
  6. Step 6: Final answer
    x = 2,282.20

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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.