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Finding the Fourth Proportional to 1,313.77, 1,813.07 and 754.24

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Solution

The fourth proportional to 1,313.77, 1,813.07 and 754.24 is: 1,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.77 : 1,813.07 = 754.24 : x
  2. Step 2: Convert to fraction form
    1,313.77/1,813.07 = 754.24/x
  3. Step 3: Cross multiply
    1,313.77x = 1,813.07 × 754.24
  4. Step 4: Simplify right side
    1,313.77x = 1,367,480.85
  5. Step 5: Solve for x
    x = 1,367,480.85/1,313.77
  6. Step 6: Final answer
    x = 1,040.88

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1.5x scale

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.