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Finding the Fourth Proportional to 3,079.86, 4,619.25 and 888.90

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Solution

The fourth proportional to 3,079.86, 4,619.25 and 888.90 is: 1,333.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.86 : 4,619.25 = 888.90 : x
  2. Step 2: Convert to fraction form
    3,079.86/4,619.25 = 888.90/x
  3. Step 3: Cross multiply
    3,079.86x = 4,619.25 × 888.90
  4. Step 4: Simplify right side
    3,079.86x = 4,106,051.33
  5. Step 5: Solve for x
    x = 4,106,051.33/3,079.86
  6. Step 6: Final answer
    x = 1,333.19

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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.