Home / 7,128.58-9,837.27-3,941.79

Finding the Fourth Proportional to 7,128.58, 9,837.27 and 3,941.79

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Solution

The fourth proportional to 7,128.58, 9,837.27 and 3,941.79 is: 5,439.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.58 : 9,837.27 = 3,941.79 : x
  2. Step 2: Convert to fraction form
    7,128.58/9,837.27 = 3,941.79/x
  3. Step 3: Cross multiply
    7,128.58x = 9,837.27 × 3,941.79
  4. Step 4: Simplify right side
    7,128.58x = 38,776,452.51
  5. Step 5: Solve for x
    x = 38,776,452.51/7,128.58
  6. Step 6: Final answer
    x = 5,439.58

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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.