Home / 2,155.80-3,228.21-1,423.14

Finding the Fourth Proportional to 2,155.80, 3,228.21 and 1,423.14

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Solution

The fourth proportional to 2,155.80, 3,228.21 and 1,423.14 is: 2,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.80 : 3,228.21 = 1,423.14 : x
  2. Step 2: Convert to fraction form
    2,155.80/3,228.21 = 1,423.14/x
  3. Step 3: Cross multiply
    2,155.80x = 3,228.21 × 1,423.14
  4. Step 4: Simplify right side
    2,155.80x = 4,594,194.78
  5. Step 5: Solve for x
    x = 4,594,194.78/2,155.80
  6. Step 6: Final answer
    x = 2,131.09

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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.