Home / 2,768.80-4,154.64-1,307.92

Finding the Fourth Proportional to 2,768.80, 4,154.64 and 1,307.92

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Solution

The fourth proportional to 2,768.80, 4,154.64 and 1,307.92 is: 1,962.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.80 : 4,154.64 = 1,307.92 : x
  2. Step 2: Convert to fraction form
    2,768.80/4,154.64 = 1,307.92/x
  3. Step 3: Cross multiply
    2,768.80x = 4,154.64 × 1,307.92
  4. Step 4: Simplify right side
    2,768.80x = 5,433,936.75
  5. Step 5: Solve for x
    x = 5,433,936.75/2,768.80
  6. Step 6: Final answer
    x = 1,962.56

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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.