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Finding the Fourth Proportional to 2,752.84, 3,800.39 and 2,121.99

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Solution

The fourth proportional to 2,752.84, 3,800.39 and 2,121.99 is: 2,929.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,752.84 : 3,800.39 = 2,121.99 : x
  2. Step 2: Convert to fraction form
    2,752.84/3,800.39 = 2,121.99/x
  3. Step 3: Cross multiply
    2,752.84x = 3,800.39 × 2,121.99
  4. Step 4: Simplify right side
    2,752.84x = 8,064,389.58
  5. Step 5: Solve for x
    x = 8,064,389.58/2,752.84
  6. Step 6: Final answer
    x = 2,929.48

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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.