Home / 2,143.22-3,215.70-1,047.56

Finding the Fourth Proportional to 2,143.22, 3,215.70 and 1,047.56

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Solution

The fourth proportional to 2,143.22, 3,215.70 and 1,047.56 is: 1,571.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.22 : 3,215.70 = 1,047.56 : x
  2. Step 2: Convert to fraction form
    2,143.22/3,215.70 = 1,047.56/x
  3. Step 3: Cross multiply
    2,143.22x = 3,215.70 × 1,047.56
  4. Step 4: Simplify right side
    2,143.22x = 3,368,622.61
  5. Step 5: Solve for x
    x = 3,368,622.61/2,143.22
  6. Step 6: Final answer
    x = 1,571.76

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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.