Home / 5,515.96-7,618.62-4,021.48

Finding the Fourth Proportional to 5,515.96, 7,618.62 and 4,021.48

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Solution

The fourth proportional to 5,515.96, 7,618.62 and 4,021.48 is: 5,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.96 : 7,618.62 = 4,021.48 : x
  2. Step 2: Convert to fraction form
    5,515.96/7,618.62 = 4,021.48/x
  3. Step 3: Cross multiply
    5,515.96x = 7,618.62 × 4,021.48
  4. Step 4: Simplify right side
    5,515.96x = 30,638,127.96
  5. Step 5: Solve for x
    x = 30,638,127.96/5,515.96
  6. Step 6: Final answer
    x = 5,554.45

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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.