Home / 2,146.20-2,961.80-1,306.94

Finding the Fourth Proportional to 2,146.20, 2,961.80 and 1,306.94

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Solution

The fourth proportional to 2,146.20, 2,961.80 and 1,306.94 is: 1,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,146.20 : 2,961.80 = 1,306.94 : x
  2. Step 2: Convert to fraction form
    2,146.20/2,961.80 = 1,306.94/x
  3. Step 3: Cross multiply
    2,146.20x = 2,961.80 × 1,306.94
  4. Step 4: Simplify right side
    2,146.20x = 3,870,873.55
  5. Step 5: Solve for x
    x = 3,870,873.55/2,146.20
  6. Step 6: Final answer
    x = 1,803.59

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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.