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Finding the Fourth Proportional to 2,671.60, 4,007.40 and 1,519.60

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Solution

The fourth proportional to 2,671.60, 4,007.40 and 1,519.60 is: 2,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.60 : 4,007.40 = 1,519.60 : x
  2. Step 2: Convert to fraction form
    2,671.60/4,007.40 = 1,519.60/x
  3. Step 3: Cross multiply
    2,671.60x = 4,007.40 × 1,519.60
  4. Step 4: Simplify right side
    2,671.60x = 6,089,645.04
  5. Step 5: Solve for x
    x = 6,089,645.04/2,671.60
  6. Step 6: Final answer
    x = 2,279.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.