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Finding the Fourth Proportional to 8,622.87, 12,858.85 and 8,544.05

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Solution

The fourth proportional to 8,622.87, 12,858.85 and 8,544.05 is: 12,741.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.87 : 12,858.85 = 8,544.05 : x
  2. Step 2: Convert to fraction form
    8,622.87/12,858.85 = 8,544.05/x
  3. Step 3: Cross multiply
    8,622.87x = 12,858.85 × 8,544.05
  4. Step 4: Simplify right side
    8,622.87x = 109,866,657.34
  5. Step 5: Solve for x
    x = 109,866,657.34/8,622.87
  6. Step 6: Final answer
    x = 12,741.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.