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Finding the Fourth Proportional to 3,079.61, 4,619.31 and 888.56

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Solution

The fourth proportional to 3,079.61, 4,619.31 and 888.56 is: 1,332.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.61 : 4,619.31 = 888.56 : x
  2. Step 2: Convert to fraction form
    3,079.61/4,619.31 = 888.56/x
  3. Step 3: Cross multiply
    3,079.61x = 4,619.31 × 888.56
  4. Step 4: Simplify right side
    3,079.61x = 4,104,528.32
  5. Step 5: Solve for x
    x = 4,104,528.32/3,079.61
  6. Step 6: Final answer
    x = 1,332.81

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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.