Home / 6,873.40-9,485.48-3,889.28

Finding the Fourth Proportional to 6,873.40, 9,485.48 and 3,889.28

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Solution

The fourth proportional to 6,873.40, 9,485.48 and 3,889.28 is: 5,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,873.40 : 9,485.48 = 3,889.28 : x
  2. Step 2: Convert to fraction form
    6,873.40/9,485.48 = 3,889.28/x
  3. Step 3: Cross multiply
    6,873.40x = 9,485.48 × 3,889.28
  4. Step 4: Simplify right side
    6,873.40x = 36,891,687.65
  5. Step 5: Solve for x
    x = 36,891,687.65/6,873.40
  6. Step 6: Final answer
    x = 5,367.31

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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.