Home / 2,715.16-4,078.50-2,305.12

Finding the Fourth Proportional to 2,715.16, 4,078.50 and 2,305.12

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Solution

The fourth proportional to 2,715.16, 4,078.50 and 2,305.12 is: 3,462.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.16 : 4,078.50 = 2,305.12 : x
  2. Step 2: Convert to fraction form
    2,715.16/4,078.50 = 2,305.12/x
  3. Step 3: Cross multiply
    2,715.16x = 4,078.50 × 2,305.12
  4. Step 4: Simplify right side
    2,715.16x = 9,401,431.92
  5. Step 5: Solve for x
    x = 9,401,431.92/2,715.16
  6. Step 6: Final answer
    x = 3,462.57

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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.