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Finding the Fourth Proportional to 4,920.84, 6,786.18 and 3,800.10

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Solution

The fourth proportional to 4,920.84, 6,786.18 and 3,800.10 is: 5,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.84 : 6,786.18 = 3,800.10 : x
  2. Step 2: Convert to fraction form
    4,920.84/6,786.18 = 3,800.10/x
  3. Step 3: Cross multiply
    4,920.84x = 6,786.18 × 3,800.10
  4. Step 4: Simplify right side
    4,920.84x = 25,788,162.62
  5. Step 5: Solve for x
    x = 25,788,162.62/4,920.84
  6. Step 6: Final answer
    x = 5,240.60

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1.5x scale

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.