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Finding the Fourth Proportional to 8,026.40, 12,039.60 and 6,586.40

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Solution

The fourth proportional to 8,026.40, 12,039.60 and 6,586.40 is: 9,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,026.40 : 12,039.60 = 6,586.40 : x
  2. Step 2: Convert to fraction form
    8,026.40/12,039.60 = 6,586.40/x
  3. Step 3: Cross multiply
    8,026.40x = 12,039.60 × 6,586.40
  4. Step 4: Simplify right side
    8,026.40x = 79,297,621.44
  5. Step 5: Solve for x
    x = 79,297,621.44/8,026.40
  6. Step 6: Final answer
    x = 9,879.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.