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Finding the Fourth Proportional to 4,894.79, 6,751.97 and 3,124.40

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Solution

The fourth proportional to 4,894.79, 6,751.97 and 3,124.40 is: 4,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,894.79 : 6,751.97 = 3,124.40 : x
  2. Step 2: Convert to fraction form
    4,894.79/6,751.97 = 3,124.40/x
  3. Step 3: Cross multiply
    4,894.79x = 6,751.97 × 3,124.40
  4. Step 4: Simplify right side
    4,894.79x = 21,095,805.69
  5. Step 5: Solve for x
    x = 21,095,805.69/4,894.79
  6. Step 6: Final answer
    x = 4,309.85

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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.