Home / 2,311.16-3,189.45-1,316.57

Finding the Fourth Proportional to 2,311.16, 3,189.45 and 1,316.57

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Solution

The fourth proportional to 2,311.16, 3,189.45 and 1,316.57 is: 1,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.16 : 3,189.45 = 1,316.57 : x
  2. Step 2: Convert to fraction form
    2,311.16/3,189.45 = 1,316.57/x
  3. Step 3: Cross multiply
    2,311.16x = 3,189.45 × 1,316.57
  4. Step 4: Simplify right side
    2,311.16x = 4,199,118.24
  5. Step 5: Solve for x
    x = 4,199,118.24/2,311.16
  6. Step 6: Final answer
    x = 1,816.89

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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.