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Finding the Fourth Proportional to 1,819.05, 2,512.23 and 1,429.05

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Solution

The fourth proportional to 1,819.05, 2,512.23 and 1,429.05 is: 1,973.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.05 : 2,512.23 = 1,429.05 : x
  2. Step 2: Convert to fraction form
    1,819.05/2,512.23 = 1,429.05/x
  3. Step 3: Cross multiply
    1,819.05x = 2,512.23 × 1,429.05
  4. Step 4: Simplify right side
    1,819.05x = 3,590,102.28
  5. Step 5: Solve for x
    x = 3,590,102.28/1,819.05
  6. Step 6: Final answer
    x = 1,973.61

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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.