Home / 8,891.18-12,269.64-4,912.25

Finding the Fourth Proportional to 8,891.18, 12,269.64 and 4,912.25

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Solution

The fourth proportional to 8,891.18, 12,269.64 and 4,912.25 is: 6,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.18 : 12,269.64 = 4,912.25 : x
  2. Step 2: Convert to fraction form
    8,891.18/12,269.64 = 4,912.25/x
  3. Step 3: Cross multiply
    8,891.18x = 12,269.64 × 4,912.25
  4. Step 4: Simplify right side
    8,891.18x = 60,271,539.09
  5. Step 5: Solve for x
    x = 60,271,539.09/8,891.18
  6. Step 6: Final answer
    x = 6,778.80

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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.