Home / 1,042.04-1,438.62-727.50

Finding the Fourth Proportional to 1,042.04, 1,438.62 and 727.50

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Solution

The fourth proportional to 1,042.04, 1,438.62 and 727.50 is: 1,004.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.04 : 1,438.62 = 727.50 : x
  2. Step 2: Convert to fraction form
    1,042.04/1,438.62 = 727.50/x
  3. Step 3: Cross multiply
    1,042.04x = 1,438.62 × 727.50
  4. Step 4: Simplify right side
    1,042.04x = 1,046,596.05
  5. Step 5: Solve for x
    x = 1,046,596.05/1,042.04
  6. Step 6: Final answer
    x = 1,004.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.