Home / 2,313.42-3,192.86-1,318.79

Finding the Fourth Proportional to 2,313.42, 3,192.86 and 1,318.79

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Solution

The fourth proportional to 2,313.42, 3,192.86 and 1,318.79 is: 1,820.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.42 : 3,192.86 = 1,318.79 : x
  2. Step 2: Convert to fraction form
    2,313.42/3,192.86 = 1,318.79/x
  3. Step 3: Cross multiply
    2,313.42x = 3,192.86 × 1,318.79
  4. Step 4: Simplify right side
    2,313.42x = 4,210,713.23
  5. Step 5: Solve for x
    x = 4,210,713.23/2,313.42
  6. Step 6: Final answer
    x = 1,820.12

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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.