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Finding the Fourth Proportional to 1,879.40, 2,816.02 and 1,807.39

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Solution

The fourth proportional to 1,879.40, 2,816.02 and 1,807.39 is: 2,708.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,879.40 : 2,816.02 = 1,807.39 : x
  2. Step 2: Convert to fraction form
    1,879.40/2,816.02 = 1,807.39/x
  3. Step 3: Cross multiply
    1,879.40x = 2,816.02 × 1,807.39
  4. Step 4: Simplify right side
    1,879.40x = 5,089,646.39
  5. Step 5: Solve for x
    x = 5,089,646.39/1,879.40
  6. Step 6: Final answer
    x = 2,708.12

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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.