Home / 1,313.52-1,960.72-1,215.92

Finding the Fourth Proportional to 1,313.52, 1,960.72 and 1,215.92

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Solution

The fourth proportional to 1,313.52, 1,960.72 and 1,215.92 is: 1,815.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.52 : 1,960.72 = 1,215.92 : x
  2. Step 2: Convert to fraction form
    1,313.52/1,960.72 = 1,215.92/x
  3. Step 3: Cross multiply
    1,313.52x = 1,960.72 × 1,215.92
  4. Step 4: Simplify right side
    1,313.52x = 2,384,078.66
  5. Step 5: Solve for x
    x = 2,384,078.66/1,313.52
  6. Step 6: Final answer
    x = 1,815.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.