Home / 2,311.95-3,190.14-1,317.18

Finding the Fourth Proportional to 2,311.95, 3,190.14 and 1,317.18

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Solution

The fourth proportional to 2,311.95, 3,190.14 and 1,317.18 is: 1,817.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.95 : 3,190.14 = 1,317.18 : x
  2. Step 2: Convert to fraction form
    2,311.95/3,190.14 = 1,317.18/x
  3. Step 3: Cross multiply
    2,311.95x = 3,190.14 × 1,317.18
  4. Step 4: Simplify right side
    2,311.95x = 4,201,988.61
  5. Step 5: Solve for x
    x = 4,201,988.61/2,311.95
  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.