Home / 6,939.90-9,577.71-3,955.14

Finding the Fourth Proportional to 6,939.90, 9,577.71 and 3,955.14

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Solution

The fourth proportional to 6,939.90, 9,577.71 and 3,955.14 is: 5,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.90 : 9,577.71 = 3,955.14 : x
  2. Step 2: Convert to fraction form
    6,939.90/9,577.71 = 3,955.14/x
  3. Step 3: Cross multiply
    6,939.90x = 9,577.71 × 3,955.14
  4. Step 4: Simplify right side
    6,939.90x = 37,881,183.93
  5. Step 5: Solve for x
    x = 37,881,183.93/6,939.90
  6. Step 6: Final answer
    x = 5,458.46

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1.5x scale

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.