Home / 3,102.30-4,280.85-1,776.06

Finding the Fourth Proportional to 3,102.30, 4,280.85 and 1,776.06

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Solution

The fourth proportional to 3,102.30, 4,280.85 and 1,776.06 is: 2,450.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.30 : 4,280.85 = 1,776.06 : x
  2. Step 2: Convert to fraction form
    3,102.30/4,280.85 = 1,776.06/x
  3. Step 3: Cross multiply
    3,102.30x = 4,280.85 × 1,776.06
  4. Step 4: Simplify right side
    3,102.30x = 7,603,046.45
  5. Step 5: Solve for x
    x = 7,603,046.45/3,102.30
  6. Step 6: Final answer
    x = 2,450.78

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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.