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Finding the Fourth Proportional to 3,447.60, 4,759.80 and 2,123.10

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Solution

The fourth proportional to 3,447.60, 4,759.80 and 2,123.10 is: 2,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.60 : 4,759.80 = 2,123.10 : x
  2. Step 2: Convert to fraction form
    3,447.60/4,759.80 = 2,123.10/x
  3. Step 3: Cross multiply
    3,447.60x = 4,759.80 × 2,123.10
  4. Step 4: Simplify right side
    3,447.60x = 10,105,525.68
  5. Step 5: Solve for x
    x = 10,105,525.68/3,447.60
  6. Step 6: Final answer
    x = 2,931.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.