Home / 2,153.92-3,211.52-2,115.04

Finding the Fourth Proportional to 2,153.92, 3,211.52 and 2,115.04

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Solution

The fourth proportional to 2,153.92, 3,211.52 and 2,115.04 is: 3,153.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,153.92 : 3,211.52 = 2,115.04 : x
  2. Step 2: Convert to fraction form
    2,153.92/3,211.52 = 2,115.04/x
  3. Step 3: Cross multiply
    2,153.92x = 3,211.52 × 2,115.04
  4. Step 4: Simplify right side
    2,153.92x = 6,792,493.26
  5. Step 5: Solve for x
    x = 6,792,493.26/2,153.92
  6. Step 6: Final answer
    x = 3,153.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.