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Finding the Fourth Proportional to 4,879.90, 6,733.83 and 2,890.46

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Solution

The fourth proportional to 4,879.90, 6,733.83 and 2,890.46 is: 3,988.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.90 : 6,733.83 = 2,890.46 : x
  2. Step 2: Convert to fraction form
    4,879.90/6,733.83 = 2,890.46/x
  3. Step 3: Cross multiply
    4,879.90x = 6,733.83 × 2,890.46
  4. Step 4: Simplify right side
    4,879.90x = 19,463,866.26
  5. Step 5: Solve for x
    x = 19,463,866.26/4,879.90
  6. Step 6: Final answer
    x = 3,988.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.