Home / 2,072.35-3,108.66-977.77

Finding the Fourth Proportional to 2,072.35, 3,108.66 and 977.77

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Solution

The fourth proportional to 2,072.35, 3,108.66 and 977.77 is: 1,466.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.35 : 3,108.66 = 977.77 : x
  2. Step 2: Convert to fraction form
    2,072.35/3,108.66 = 977.77/x
  3. Step 3: Cross multiply
    2,072.35x = 3,108.66 × 977.77
  4. Step 4: Simplify right side
    2,072.35x = 3,039,554.49
  5. Step 5: Solve for x
    x = 3,039,554.49/2,072.35
  6. Step 6: Final answer
    x = 1,466.72

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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.