Home / 2,942.12-4,060.16-1,615.80

Finding the Fourth Proportional to 2,942.12, 4,060.16 and 1,615.80

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Solution

The fourth proportional to 2,942.12, 4,060.16 and 1,615.80 is: 2,229.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.12 : 4,060.16 = 1,615.80 : x
  2. Step 2: Convert to fraction form
    2,942.12/4,060.16 = 1,615.80/x
  3. Step 3: Cross multiply
    2,942.12x = 4,060.16 × 1,615.80
  4. Step 4: Simplify right side
    2,942.12x = 6,560,406.53
  5. Step 5: Solve for x
    x = 6,560,406.53/2,942.12
  6. Step 6: Final answer
    x = 2,229.82

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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.