Home / 6,228.11-8,589.93-3,990.19

Finding the Fourth Proportional to 6,228.11, 8,589.93 and 3,990.19

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Solution

The fourth proportional to 6,228.11, 8,589.93 and 3,990.19 is: 5,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,228.11 : 8,589.93 = 3,990.19 : x
  2. Step 2: Convert to fraction form
    6,228.11/8,589.93 = 3,990.19/x
  3. Step 3: Cross multiply
    6,228.11x = 8,589.93 × 3,990.19
  4. Step 4: Simplify right side
    6,228.11x = 34,275,448.56
  5. Step 5: Solve for x
    x = 34,275,448.56/6,228.11
  6. Step 6: Final answer
    x = 5,503.35

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Half scale
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Double scale
Find fourth proportional to 6,229.11, 8,591.31 and 3,991.19
Similar ratio
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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.