Home / 2,155.75-3,232.95-1,429.18

Finding the Fourth Proportional to 2,155.75, 3,232.95 and 1,429.18

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Solution

The fourth proportional to 2,155.75, 3,232.95 and 1,429.18 is: 2,143.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.75 : 3,232.95 = 1,429.18 : x
  2. Step 2: Convert to fraction form
    2,155.75/3,232.95 = 1,429.18/x
  3. Step 3: Cross multiply
    2,155.75x = 3,232.95 × 1,429.18
  4. Step 4: Simplify right side
    2,155.75x = 4,620,454.04
  5. Step 5: Solve for x
    x = 4,620,454.04/2,155.75
  6. Step 6: Final answer
    x = 2,143.32

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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.