Home / 2,311.48-3,190.18-1,316.85

Finding the Fourth Proportional to 2,311.48, 3,190.18 and 1,316.85

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Solution

The fourth proportional to 2,311.48, 3,190.18 and 1,316.85 is: 1,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.48 : 3,190.18 = 1,316.85 : x
  2. Step 2: Convert to fraction form
    2,311.48/3,190.18 = 1,316.85/x
  3. Step 3: Cross multiply
    2,311.48x = 3,190.18 × 1,316.85
  4. Step 4: Simplify right side
    2,311.48x = 4,200,981.95
  5. Step 5: Solve for x
    x = 4,200,981.95/2,311.48
  6. Step 6: Final answer
    x = 1,817.44

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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.