Home / 8,391.90-12,586.92-4,230.18

Finding the Fourth Proportional to 8,391.90, 12,586.92 and 4,230.18

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Solution

The fourth proportional to 8,391.90, 12,586.92 and 4,230.18 is: 6,344.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.90 : 12,586.92 = 4,230.18 : x
  2. Step 2: Convert to fraction form
    8,391.90/12,586.92 = 4,230.18/x
  3. Step 3: Cross multiply
    8,391.90x = 12,586.92 × 4,230.18
  4. Step 4: Simplify right side
    8,391.90x = 53,244,937.25
  5. Step 5: Solve for x
    x = 53,244,937.25/8,391.90
  6. Step 6: Final answer
    x = 6,344.80

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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.