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Finding the Fourth Proportional to 8,586.90, 12,880.13 and 4,203.45

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Solution

The fourth proportional to 8,586.90, 12,880.13 and 4,203.45 is: 6,305.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.90 : 12,880.13 = 4,203.45 : x
  2. Step 2: Convert to fraction form
    8,586.90/12,880.13 = 4,203.45/x
  3. Step 3: Cross multiply
    8,586.90x = 12,880.13 × 4,203.45
  4. Step 4: Simplify right side
    8,586.90x = 54,140,961.43
  5. Step 5: Solve for x
    x = 54,140,961.43/8,586.90
  6. Step 6: Final answer
    x = 6,305.06

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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.