Home / 3,879.34-5,818.86-1,688.06

Finding the Fourth Proportional to 3,879.34, 5,818.86 and 1,688.06

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Solution

The fourth proportional to 3,879.34, 5,818.86 and 1,688.06 is: 2,532.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.34 : 5,818.86 = 1,688.06 : x
  2. Step 2: Convert to fraction form
    3,879.34/5,818.86 = 1,688.06/x
  3. Step 3: Cross multiply
    3,879.34x = 5,818.86 × 1,688.06
  4. Step 4: Simplify right side
    3,879.34x = 9,822,584.81
  5. Step 5: Solve for x
    x = 9,822,584.81/3,879.34
  6. Step 6: Final answer
    x = 2,532.02

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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.