Home / 2,517.21-3,471.05-2,143.60

Finding the Fourth Proportional to 2,517.21, 3,471.05 and 2,143.60

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Solution

The fourth proportional to 2,517.21, 3,471.05 and 2,143.60 is: 2,955.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.21 : 3,471.05 = 2,143.60 : x
  2. Step 2: Convert to fraction form
    2,517.21/3,471.05 = 2,143.60/x
  3. Step 3: Cross multiply
    2,517.21x = 3,471.05 × 2,143.60
  4. Step 4: Simplify right side
    2,517.21x = 7,440,539.46
  5. Step 5: Solve for x
    x = 7,440,539.46/2,517.21
  6. Step 6: Final answer
    x = 2,955.87

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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.