Home / 1,238.04-1,708.36-740.62

Finding the Fourth Proportional to 1,238.04, 1,708.36 and 740.62

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Solution

The fourth proportional to 1,238.04, 1,708.36 and 740.62 is: 1,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.04 : 1,708.36 = 740.62 : x
  2. Step 2: Convert to fraction form
    1,238.04/1,708.36 = 740.62/x
  3. Step 3: Cross multiply
    1,238.04x = 1,708.36 × 740.62
  4. Step 4: Simplify right side
    1,238.04x = 1,265,245.58
  5. Step 5: Solve for x
    x = 1,265,245.58/1,238.04
  6. Step 6: Final answer
    x = 1,021.97

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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.