Home / 2,311.13-3,189.36-1,316.36

Finding the Fourth Proportional to 2,311.13, 3,189.36 and 1,316.36

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Solution

The fourth proportional to 2,311.13, 3,189.36 and 1,316.36 is: 1,816.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.13 : 3,189.36 = 1,316.36 : x
  2. Step 2: Convert to fraction form
    2,311.13/3,189.36 = 1,316.36/x
  3. Step 3: Cross multiply
    2,311.13x = 3,189.36 × 1,316.36
  4. Step 4: Simplify right side
    2,311.13x = 4,198,345.93
  5. Step 5: Solve for x
    x = 4,198,345.93/2,311.13
  6. Step 6: Final answer
    x = 1,816.58

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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.