Home / 7,181.82-9,911.84-4,038.62

Finding the Fourth Proportional to 7,181.82, 9,911.84 and 4,038.62

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Solution

The fourth proportional to 7,181.82, 9,911.84 and 4,038.62 is: 5,573.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.82 : 9,911.84 = 4,038.62 : x
  2. Step 2: Convert to fraction form
    7,181.82/9,911.84 = 4,038.62/x
  3. Step 3: Cross multiply
    7,181.82x = 9,911.84 × 4,038.62
  4. Step 4: Simplify right side
    7,181.82x = 40,030,085.51
  5. Step 5: Solve for x
    x = 40,030,085.51/7,181.82
  6. Step 6: Final answer
    x = 5,573.81

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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.