Home / 5,148.36-7,104.72-2,790.48

Finding the Fourth Proportional to 5,148.36, 7,104.72 and 2,790.48

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Solution

The fourth proportional to 5,148.36, 7,104.72 and 2,790.48 is: 3,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.36 : 7,104.72 = 2,790.48 : x
  2. Step 2: Convert to fraction form
    5,148.36/7,104.72 = 2,790.48/x
  3. Step 3: Cross multiply
    5,148.36x = 7,104.72 × 2,790.48
  4. Step 4: Simplify right side
    5,148.36x = 19,825,579.07
  5. Step 5: Solve for x
    x = 19,825,579.07/5,148.36
  6. Step 6: Final answer
    x = 3,850.85

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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.