Home / 8,485.06-12,728.81-2,642.26

Finding the Fourth Proportional to 8,485.06, 12,728.81 and 2,642.26

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Solution

The fourth proportional to 8,485.06, 12,728.81 and 2,642.26 is: 3,963.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.06 : 12,728.81 = 2,642.26 : x
  2. Step 2: Convert to fraction form
    8,485.06/12,728.81 = 2,642.26/x
  3. Step 3: Cross multiply
    8,485.06x = 12,728.81 × 2,642.26
  4. Step 4: Simplify right side
    8,485.06x = 33,632,825.51
  5. Step 5: Solve for x
    x = 33,632,825.51/8,485.06
  6. Step 6: Final answer
    x = 3,963.77

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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.