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Finding the Fourth Proportional to 4,868.66, 6,718.46 and 2,879.39

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Solution

The fourth proportional to 4,868.66, 6,718.46 and 2,879.39 is: 3,973.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,868.66 : 6,718.46 = 2,879.39 : x
  2. Step 2: Convert to fraction form
    4,868.66/6,718.46 = 2,879.39/x
  3. Step 3: Cross multiply
    4,868.66x = 6,718.46 × 2,879.39
  4. Step 4: Simplify right side
    4,868.66x = 19,345,018.55
  5. Step 5: Solve for x
    x = 19,345,018.55/4,868.66
  6. Step 6: Final answer
    x = 3,973.38

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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.