Home / 7,109.42-9,811.26-3,966.21

Finding the Fourth Proportional to 7,109.42, 9,811.26 and 3,966.21

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Solution

The fourth proportional to 7,109.42, 9,811.26 and 3,966.21 is: 5,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,109.42 : 9,811.26 = 3,966.21 : x
  2. Step 2: Convert to fraction form
    7,109.42/9,811.26 = 3,966.21/x
  3. Step 3: Cross multiply
    7,109.42x = 9,811.26 × 3,966.21
  4. Step 4: Simplify right side
    7,109.42x = 38,913,517.52
  5. Step 5: Solve for x
    x = 38,913,517.52/7,109.42
  6. Step 6: Final answer
    x = 5,473.52

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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.