Home / 2,315.75-3,471.20-1,143.18

Finding the Fourth Proportional to 2,315.75, 3,471.20 and 1,143.18

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Solution

The fourth proportional to 2,315.75, 3,471.20 and 1,143.18 is: 1,713.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.75 : 3,471.20 = 1,143.18 : x
  2. Step 2: Convert to fraction form
    2,315.75/3,471.20 = 1,143.18/x
  3. Step 3: Cross multiply
    2,315.75x = 3,471.20 × 1,143.18
  4. Step 4: Simplify right side
    2,315.75x = 3,968,204.99
  5. Step 5: Solve for x
    x = 3,968,204.99/2,315.75
  6. Step 6: Final answer
    x = 1,713.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.