Home / 2,715.53-3,743.75-2,157.84

Finding the Fourth Proportional to 2,715.53, 3,743.75 and 2,157.84

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Solution

The fourth proportional to 2,715.53, 3,743.75 and 2,157.84 is: 2,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.53 : 3,743.75 = 2,157.84 : x
  2. Step 2: Convert to fraction form
    2,715.53/3,743.75 = 2,157.84/x
  3. Step 3: Cross multiply
    2,715.53x = 3,743.75 × 2,157.84
  4. Step 4: Simplify right side
    2,715.53x = 8,078,418.89
  5. Step 5: Solve for x
    x = 8,078,418.89/2,715.53
  6. Step 6: Final answer
    x = 2,974.90

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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.