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Finding the Fourth Proportional to 3,361.63, 4,638.98 and 1,869.53

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Solution

The fourth proportional to 3,361.63, 4,638.98 and 1,869.53 is: 2,579.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,361.63 : 4,638.98 = 1,869.53 : x
  2. Step 2: Convert to fraction form
    3,361.63/4,638.98 = 1,869.53/x
  3. Step 3: Cross multiply
    3,361.63x = 4,638.98 × 1,869.53
  4. Step 4: Simplify right side
    3,361.63x = 8,672,728.55
  5. Step 5: Solve for x
    x = 8,672,728.55/3,361.63
  6. Step 6: Final answer
    x = 2,579.92

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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.