Home / 5,086.80-7,055.10-4,989.60

Finding the Fourth Proportional to 5,086.80, 7,055.10 and 4,989.60

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Solution

The fourth proportional to 5,086.80, 7,055.10 and 4,989.60 is: 6,920.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,086.80 : 7,055.10 = 4,989.60 : x
  2. Step 2: Convert to fraction form
    5,086.80/7,055.10 = 4,989.60/x
  3. Step 3: Cross multiply
    5,086.80x = 7,055.10 × 4,989.60
  4. Step 4: Simplify right side
    5,086.80x = 35,202,126.96
  5. Step 5: Solve for x
    x = 35,202,126.96/5,086.80
  6. Step 6: Final answer
    x = 6,920.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.