Home / 2,754.13-4,131.21-1,215.13

Finding the Fourth Proportional to 2,754.13, 4,131.21 and 1,215.13

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Solution

The fourth proportional to 2,754.13, 4,131.21 and 1,215.13 is: 1,822.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.13 : 4,131.21 = 1,215.13 : x
  2. Step 2: Convert to fraction form
    2,754.13/4,131.21 = 1,215.13/x
  3. Step 3: Cross multiply
    2,754.13x = 4,131.21 × 1,215.13
  4. Step 4: Simplify right side
    2,754.13x = 5,019,957.21
  5. Step 5: Solve for x
    x = 5,019,957.21/2,754.13
  6. Step 6: Final answer
    x = 1,822.70

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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.