Home / 1,313.46-1,961.66-1,116.38

Finding the Fourth Proportional to 1,313.46, 1,961.66 and 1,116.38

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Solution

The fourth proportional to 1,313.46, 1,961.66 and 1,116.38 is: 1,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.46 : 1,961.66 = 1,116.38 : x
  2. Step 2: Convert to fraction form
    1,313.46/1,961.66 = 1,116.38/x
  3. Step 3: Cross multiply
    1,313.46x = 1,961.66 × 1,116.38
  4. Step 4: Simplify right side
    1,313.46x = 2,189,965.69
  5. Step 5: Solve for x
    x = 2,189,965.69/1,313.46
  6. Step 6: Final answer
    x = 1,667.33

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1.5x scale

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.