Home / 2,311.67-3,190.08-1,317.05

Finding the Fourth Proportional to 2,311.67, 3,190.08 and 1,317.05

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Solution

The fourth proportional to 2,311.67, 3,190.08 and 1,317.05 is: 1,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.67 : 3,190.08 = 1,317.05 : x
  2. Step 2: Convert to fraction form
    2,311.67/3,190.08 = 1,317.05/x
  3. Step 3: Cross multiply
    2,311.67x = 3,190.08 × 1,317.05
  4. Step 4: Simplify right side
    2,311.67x = 4,201,478.91
  5. Step 5: Solve for x
    x = 4,201,478.91/2,311.67
  6. Step 6: Final answer
    x = 1,817.51

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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.