Home / 2,313.36-3,192.12-1,318.80

Finding the Fourth Proportional to 2,313.36, 3,192.12 and 1,318.80

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Solution

The fourth proportional to 2,313.36, 3,192.12 and 1,318.80 is: 1,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.36 : 3,192.12 = 1,318.80 : x
  2. Step 2: Convert to fraction form
    2,313.36/3,192.12 = 1,318.80/x
  3. Step 3: Cross multiply
    2,313.36x = 3,192.12 × 1,318.80
  4. Step 4: Simplify right side
    2,313.36x = 4,209,767.86
  5. Step 5: Solve for x
    x = 4,209,767.86/2,313.36
  6. Step 6: Final answer
    x = 1,819.76

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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.