Home / 2,313.16-3,191.93-1,318.38

Finding the Fourth Proportional to 2,313.16, 3,191.93 and 1,318.38

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Solution

The fourth proportional to 2,313.16, 3,191.93 and 1,318.38 is: 1,819.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.16 : 3,191.93 = 1,318.38 : x
  2. Step 2: Convert to fraction form
    2,313.16/3,191.93 = 1,318.38/x
  3. Step 3: Cross multiply
    2,313.16x = 3,191.93 × 1,318.38
  4. Step 4: Simplify right side
    2,313.16x = 4,208,170.08
  5. Step 5: Solve for x
    x = 4,208,170.08/2,313.16
  6. Step 6: Final answer
    x = 1,819.23

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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.