Home / 2,072.16-3,108.60-611.40

Finding the Fourth Proportional to 2,072.16, 3,108.60 and 611.40

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Solution

The fourth proportional to 2,072.16, 3,108.60 and 611.40 is: 917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.16 : 3,108.60 = 611.40 : x
  2. Step 2: Convert to fraction form
    2,072.16/3,108.60 = 611.40/x
  3. Step 3: Cross multiply
    2,072.16x = 3,108.60 × 611.40
  4. Step 4: Simplify right side
    2,072.16x = 1,900,598.04
  5. Step 5: Solve for x
    x = 1,900,598.04/2,072.16
  6. Step 6: Final answer
    x = 917.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.