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Finding the Fourth Proportional to 4,898.50, 6,759.93 and 2,690.50

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Solution

The fourth proportional to 4,898.50, 6,759.93 and 2,690.50 is: 3,712.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,898.50 : 6,759.93 = 2,690.50 : x
  2. Step 2: Convert to fraction form
    4,898.50/6,759.93 = 2,690.50/x
  3. Step 3: Cross multiply
    4,898.50x = 6,759.93 × 2,690.50
  4. Step 4: Simplify right side
    4,898.50x = 18,187,591.67
  5. Step 5: Solve for x
    x = 18,187,591.67/4,898.50
  6. Step 6: Final answer
    x = 3,712.89

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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.