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Finding the Fourth Proportional to 3,136.98, 4,678.06 and 2,748.79

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Solution

The fourth proportional to 3,136.98, 4,678.06 and 2,748.79 is: 4,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.98 : 4,678.06 = 2,748.79 : x
  2. Step 2: Convert to fraction form
    3,136.98/4,678.06 = 2,748.79/x
  3. Step 3: Cross multiply
    3,136.98x = 4,678.06 × 2,748.79
  4. Step 4: Simplify right side
    3,136.98x = 12,859,004.55
  5. Step 5: Solve for x
    x = 12,859,004.55/3,136.98
  6. Step 6: Final answer
    x = 4,099.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.