Home / 8,586.18-12,880.53-3,390.66

Finding the Fourth Proportional to 8,586.18, 12,880.53 and 3,390.66

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Solution

The fourth proportional to 8,586.18, 12,880.53 and 3,390.66 is: 5,086.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.18 : 12,880.53 = 3,390.66 : x
  2. Step 2: Convert to fraction form
    8,586.18/12,880.53 = 3,390.66/x
  3. Step 3: Cross multiply
    8,586.18x = 12,880.53 × 3,390.66
  4. Step 4: Simplify right side
    8,586.18x = 43,673,497.85
  5. Step 5: Solve for x
    x = 43,673,497.85/8,586.18
  6. Step 6: Final answer
    x = 5,086.49

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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.