Home / 2,095.80-2,891.46-1,211.55

Finding the Fourth Proportional to 2,095.80, 2,891.46 and 1,211.55

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Solution

The fourth proportional to 2,095.80, 2,891.46 and 1,211.55 is: 1,671.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,095.80 : 2,891.46 = 1,211.55 : x
  2. Step 2: Convert to fraction form
    2,095.80/2,891.46 = 1,211.55/x
  3. Step 3: Cross multiply
    2,095.80x = 2,891.46 × 1,211.55
  4. Step 4: Simplify right side
    2,095.80x = 3,503,148.36
  5. Step 5: Solve for x
    x = 3,503,148.36/2,095.80
  6. Step 6: Final answer
    x = 1,671.51

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1.5x scale

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.