Home / 3,159.86-4,740.84-1,311.83

Finding the Fourth Proportional to 3,159.86, 4,740.84 and 1,311.83

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Solution

The fourth proportional to 3,159.86, 4,740.84 and 1,311.83 is: 1,968.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.86 : 4,740.84 = 1,311.83 : x
  2. Step 2: Convert to fraction form
    3,159.86/4,740.84 = 1,311.83/x
  3. Step 3: Cross multiply
    3,159.86x = 4,740.84 × 1,311.83
  4. Step 4: Simplify right side
    3,159.86x = 6,219,176.14
  5. Step 5: Solve for x
    x = 6,219,176.14/3,159.86
  6. Step 6: Final answer
    x = 1,968.18

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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.