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Finding the Fourth Proportional to 9,835.16, 14,755.98 and 3,990.20

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Solution

The fourth proportional to 9,835.16, 14,755.98 and 3,990.20 is: 5,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,835.16 : 14,755.98 = 3,990.20 : x
  2. Step 2: Convert to fraction form
    9,835.16/14,755.98 = 3,990.20/x
  3. Step 3: Cross multiply
    9,835.16x = 14,755.98 × 3,990.20
  4. Step 4: Simplify right side
    9,835.16x = 58,879,311.40
  5. Step 5: Solve for x
    x = 58,879,311.40/9,835.16
  6. Step 6: Final answer
    x = 5,986.61

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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.