Home / 5,190.38-7,126.55-5,055.08

Finding the Fourth Proportional to 5,190.38, 7,126.55 and 5,055.08

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Solution

The fourth proportional to 5,190.38, 7,126.55 and 5,055.08 is: 6,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.38 : 7,126.55 = 5,055.08 : x
  2. Step 2: Convert to fraction form
    5,190.38/7,126.55 = 5,055.08/x
  3. Step 3: Cross multiply
    5,190.38x = 7,126.55 × 5,055.08
  4. Step 4: Simplify right side
    5,190.38x = 36,025,280.37
  5. Step 5: Solve for x
    x = 36,025,280.37/5,190.38
  6. Step 6: Final answer
    x = 6,940.78

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Half scale
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Double scale
Find fourth proportional to 5,191.38, 7,127.92 and 5,056.08
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.