Home / 7,111.09-9,811.02-3,966.67

Finding the Fourth Proportional to 7,111.09, 9,811.02 and 3,966.67

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Solution

The fourth proportional to 7,111.09, 9,811.02 and 3,966.67 is: 5,472.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.09 : 9,811.02 = 3,966.67 : x
  2. Step 2: Convert to fraction form
    7,111.09/9,811.02 = 3,966.67/x
  3. Step 3: Cross multiply
    7,111.09x = 9,811.02 × 3,966.67
  4. Step 4: Simplify right side
    7,111.09x = 38,917,078.70
  5. Step 5: Solve for x
    x = 38,917,078.70/7,111.09
  6. Step 6: Final answer
    x = 5,472.73

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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.