Home / 3,077.78-4,237.89-2,830.10

Finding the Fourth Proportional to 3,077.78, 4,237.89 and 2,830.10

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Solution

The fourth proportional to 3,077.78, 4,237.89 and 2,830.10 is: 3,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.78 : 4,237.89 = 2,830.10 : x
  2. Step 2: Convert to fraction form
    3,077.78/4,237.89 = 2,830.10/x
  3. Step 3: Cross multiply
    3,077.78x = 4,237.89 × 2,830.10
  4. Step 4: Simplify right side
    3,077.78x = 11,993,652.49
  5. Step 5: Solve for x
    x = 11,993,652.49/3,077.78
  6. Step 6: Final answer
    x = 3,896.85

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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.