Home / 7,181.20-9,908.64-4,036.96

Finding the Fourth Proportional to 7,181.20, 9,908.64 and 4,036.96

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Solution

The fourth proportional to 7,181.20, 9,908.64 and 4,036.96 is: 5,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.20 : 9,908.64 = 4,036.96 : x
  2. Step 2: Convert to fraction form
    7,181.20/9,908.64 = 4,036.96/x
  3. Step 3: Cross multiply
    7,181.20x = 9,908.64 × 4,036.96
  4. Step 4: Simplify right side
    7,181.20x = 40,000,783.33
  5. Step 5: Solve for x
    x = 40,000,783.33/7,181.20
  6. Step 6: Final answer
    x = 5,570.21

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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.