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Finding the Fourth Proportional to 4,878, 6,730.02 and 2,889.18

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Solution

The fourth proportional to 4,878, 6,730.02 and 2,889.18 is: 3,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878 : 6,730.02 = 2,889.18 : x
  2. Step 2: Convert to fraction form
    4,878/6,730.02 = 2,889.18/x
  3. Step 3: Cross multiply
    4,878x = 6,730.02 × 2,889.18
  4. Step 4: Simplify right side
    4,878x = 19,444,239.18
  5. Step 5: Solve for x
    x = 19,444,239.18/4,878
  6. Step 6: Final answer
    x = 3,986.11

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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.