Home / 7,111.35-10,668.11-3,412.89

Finding the Fourth Proportional to 7,111.35, 10,668.11 and 3,412.89

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Solution

The fourth proportional to 7,111.35, 10,668.11 and 3,412.89 is: 5,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.35 : 10,668.11 = 3,412.89 : x
  2. Step 2: Convert to fraction form
    7,111.35/10,668.11 = 3,412.89/x
  3. Step 3: Cross multiply
    7,111.35x = 10,668.11 × 3,412.89
  4. Step 4: Simplify right side
    7,111.35x = 36,409,068.87
  5. Step 5: Solve for x
    x = 36,409,068.87/7,111.35
  6. Step 6: Final answer
    x = 5,119.85

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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.