Home / 5,028.48-6,939.36-2,790.40

Finding the Fourth Proportional to 5,028.48, 6,939.36 and 2,790.40

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Solution

The fourth proportional to 5,028.48, 6,939.36 and 2,790.40 is: 3,850.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.48 : 6,939.36 = 2,790.40 : x
  2. Step 2: Convert to fraction form
    5,028.48/6,939.36 = 2,790.40/x
  3. Step 3: Cross multiply
    5,028.48x = 6,939.36 × 2,790.40
  4. Step 4: Simplify right side
    5,028.48x = 19,363,590.14
  5. Step 5: Solve for x
    x = 19,363,590.14/5,028.48
  6. Step 6: Final answer
    x = 3,850.78

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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.