Home / 2,131.17-2,939.67-1,423.23

Finding the Fourth Proportional to 2,131.17, 2,939.67 and 1,423.23

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Solution

The fourth proportional to 2,131.17, 2,939.67 and 1,423.23 is: 1,963.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.17 : 2,939.67 = 1,423.23 : x
  2. Step 2: Convert to fraction form
    2,131.17/2,939.67 = 1,423.23/x
  3. Step 3: Cross multiply
    2,131.17x = 2,939.67 × 1,423.23
  4. Step 4: Simplify right side
    2,131.17x = 4,183,826.53
  5. Step 5: Solve for x
    x = 4,183,826.53/2,131.17
  6. Step 6: Final answer
    x = 1,963.16

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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.