Home / 5,518.16-7,615.20-3,161.06

Finding the Fourth Proportional to 5,518.16, 7,615.20 and 3,161.06

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Solution

The fourth proportional to 5,518.16, 7,615.20 and 3,161.06 is: 4,362.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.16 : 7,615.20 = 3,161.06 : x
  2. Step 2: Convert to fraction form
    5,518.16/7,615.20 = 3,161.06/x
  3. Step 3: Cross multiply
    5,518.16x = 7,615.20 × 3,161.06
  4. Step 4: Simplify right side
    5,518.16x = 24,072,104.11
  5. Step 5: Solve for x
    x = 24,072,104.11/5,518.16
  6. Step 6: Final answer
    x = 4,362.34

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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.