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Finding the Fourth Proportional to 2,894.40, 3,994.20 and 1,635.41

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Solution

The fourth proportional to 2,894.40, 3,994.20 and 1,635.41 is: 2,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,894.40 : 3,994.20 = 1,635.41 : x
  2. Step 2: Convert to fraction form
    2,894.40/3,994.20 = 1,635.41/x
  3. Step 3: Cross multiply
    2,894.40x = 3,994.20 × 1,635.41
  4. Step 4: Simplify right side
    2,894.40x = 6,532,164.61
  5. Step 5: Solve for x
    x = 6,532,164.61/2,894.40
  6. Step 6: Final answer
    x = 2,256.83

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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.