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Finding the Fourth Proportional to 3,361.49, 4,638.83 and 1,869.39

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Solution

The fourth proportional to 3,361.49, 4,638.83 and 1,869.39 is: 2,579.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,361.49 : 4,638.83 = 1,869.39 : x
  2. Step 2: Convert to fraction form
    3,361.49/4,638.83 = 1,869.39/x
  3. Step 3: Cross multiply
    3,361.49x = 4,638.83 × 1,869.39
  4. Step 4: Simplify right side
    3,361.49x = 8,671,782.41
  5. Step 5: Solve for x
    x = 8,671,782.41/3,361.49
  6. Step 6: Final answer
    x = 2,579.74

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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.