Home / 5,377.69-7,421.16-3,019.78

Finding the Fourth Proportional to 5,377.69, 7,421.16 and 3,019.78

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Solution

The fourth proportional to 5,377.69, 7,421.16 and 3,019.78 is: 4,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.69 : 7,421.16 = 3,019.78 : x
  2. Step 2: Convert to fraction form
    5,377.69/7,421.16 = 3,019.78/x
  3. Step 3: Cross multiply
    5,377.69x = 7,421.16 × 3,019.78
  4. Step 4: Simplify right side
    5,377.69x = 22,410,270.54
  5. Step 5: Solve for x
    x = 22,410,270.54/5,377.69
  6. Step 6: Final answer
    x = 4,167.27

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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.