Home / 2,715.11-4,072.58-767.31

Finding the Fourth Proportional to 2,715.11, 4,072.58 and 767.31

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Solution

The fourth proportional to 2,715.11, 4,072.58 and 767.31 is: 1,150.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.11 : 4,072.58 = 767.31 : x
  2. Step 2: Convert to fraction form
    2,715.11/4,072.58 = 767.31/x
  3. Step 3: Cross multiply
    2,715.11x = 4,072.58 × 767.31
  4. Step 4: Simplify right side
    2,715.11x = 3,124,931.36
  5. Step 5: Solve for x
    x = 3,124,931.36/2,715.11
  6. Step 6: Final answer
    x = 1,150.94

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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.