Home / 5,319.86-7,981.00-1,622.16

Finding the Fourth Proportional to 5,319.86, 7,981.00 and 1,622.16

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Solution

The fourth proportional to 5,319.86, 7,981.00 and 1,622.16 is: 2,433.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.86 : 7,981.00 = 1,622.16 : x
  2. Step 2: Convert to fraction form
    5,319.86/7,981.00 = 1,622.16/x
  3. Step 3: Cross multiply
    5,319.86x = 7,981.00 × 1,622.16
  4. Step 4: Simplify right side
    5,319.86x = 12,946,454.90
  5. Step 5: Solve for x
    x = 12,946,454.90/5,319.86
  6. Step 6: Final answer
    x = 2,433.61

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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.