Home / 3,091.16-4,266.03-1,912.91

Finding the Fourth Proportional to 3,091.16, 4,266.03 and 1,912.91

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Solution

The fourth proportional to 3,091.16, 4,266.03 and 1,912.91 is: 2,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.16 : 4,266.03 = 1,912.91 : x
  2. Step 2: Convert to fraction form
    3,091.16/4,266.03 = 1,912.91/x
  3. Step 3: Cross multiply
    3,091.16x = 4,266.03 × 1,912.91
  4. Step 4: Simplify right side
    3,091.16x = 8,160,521.88
  5. Step 5: Solve for x
    x = 8,160,521.88/3,091.16
  6. Step 6: Final answer
    x = 2,639.96

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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.