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Finding the Fourth Proportional to 4,984, 7,476 and 1,863.88

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Solution

The fourth proportional to 4,984, 7,476 and 1,863.88 is: 2,795.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984 : 7,476 = 1,863.88 : x
  2. Step 2: Convert to fraction form
    4,984/7,476 = 1,863.88/x
  3. Step 3: Cross multiply
    4,984x = 7,476 × 1,863.88
  4. Step 4: Simplify right side
    4,984x = 13,934,366.88
  5. Step 5: Solve for x
    x = 13,934,366.88/4,984
  6. Step 6: Final answer
    x = 2,795.82

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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.