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Finding the Fourth Proportional to 1,919.77, 2,879.83 and 1,487.41

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Solution

The fourth proportional to 1,919.77, 2,879.83 and 1,487.41 is: 2,231.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.77 : 2,879.83 = 1,487.41 : x
  2. Step 2: Convert to fraction form
    1,919.77/2,879.83 = 1,487.41/x
  3. Step 3: Cross multiply
    1,919.77x = 2,879.83 × 1,487.41
  4. Step 4: Simplify right side
    1,919.77x = 4,283,482.60
  5. Step 5: Solve for x
    x = 4,283,482.60/1,919.77
  6. Step 6: Final answer
    x = 2,231.25

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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.