Home / 6,908.40-10,362.96-1,978.77

Finding the Fourth Proportional to 6,908.40, 10,362.96 and 1,978.77

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Solution

The fourth proportional to 6,908.40, 10,362.96 and 1,978.77 is: 2,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,908.40 : 10,362.96 = 1,978.77 : x
  2. Step 2: Convert to fraction form
    6,908.40/10,362.96 = 1,978.77/x
  3. Step 3: Cross multiply
    6,908.40x = 10,362.96 × 1,978.77
  4. Step 4: Simplify right side
    6,908.40x = 20,505,914.36
  5. Step 5: Solve for x
    x = 20,505,914.36/6,908.40
  6. Step 6: Final answer
    x = 2,968.26

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1.5x scale

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.