Home / 7,057.35-9,738.90-3,913.38

Finding the Fourth Proportional to 7,057.35, 9,738.90 and 3,913.38

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Solution

The fourth proportional to 7,057.35, 9,738.90 and 3,913.38 is: 5,400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,057.35 : 9,738.90 = 3,913.38 : x
  2. Step 2: Convert to fraction form
    7,057.35/9,738.90 = 3,913.38/x
  3. Step 3: Cross multiply
    7,057.35x = 9,738.90 × 3,913.38
  4. Step 4: Simplify right side
    7,057.35x = 38,112,016.48
  5. Step 5: Solve for x
    x = 38,112,016.48/7,057.35
  6. Step 6: Final answer
    x = 5,400.33

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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.