Home / 7,111.58-10,667.39-2,181.22

Finding the Fourth Proportional to 7,111.58, 10,667.39 and 2,181.22

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Solution

The fourth proportional to 7,111.58, 10,667.39 and 2,181.22 is: 3,271.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.58 : 10,667.39 = 2,181.22 : x
  2. Step 2: Convert to fraction form
    7,111.58/10,667.39 = 2,181.22/x
  3. Step 3: Cross multiply
    7,111.58x = 10,667.39 × 2,181.22
  4. Step 4: Simplify right side
    7,111.58x = 23,267,886.84
  5. Step 5: Solve for x
    x = 23,267,886.84/7,111.58
  6. Step 6: Final answer
    x = 3,271.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.