Home / 5,217.69-7,199.24-2,978.85

Finding the Fourth Proportional to 5,217.69, 7,199.24 and 2,978.85

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Solution

The fourth proportional to 5,217.69, 7,199.24 and 2,978.85 is: 4,110.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.69 : 7,199.24 = 2,978.85 : x
  2. Step 2: Convert to fraction form
    5,217.69/7,199.24 = 2,978.85/x
  3. Step 3: Cross multiply
    5,217.69x = 7,199.24 × 2,978.85
  4. Step 4: Simplify right side
    5,217.69x = 21,445,456.07
  5. Step 5: Solve for x
    x = 21,445,456.07/5,217.69
  6. Step 6: Final answer
    x = 4,110.14

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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.