Home / 8,642.06-11,936.80-7,802.36

Finding the Fourth Proportional to 8,642.06, 11,936.80 and 7,802.36

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Solution

The fourth proportional to 8,642.06, 11,936.80 and 7,802.36 is: 10,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.06 : 11,936.80 = 7,802.36 : x
  2. Step 2: Convert to fraction form
    8,642.06/11,936.80 = 7,802.36/x
  3. Step 3: Cross multiply
    8,642.06x = 11,936.80 × 7,802.36
  4. Step 4: Simplify right side
    8,642.06x = 93,135,210.85
  5. Step 5: Solve for x
    x = 93,135,210.85/8,642.06
  6. Step 6: Final answer
    x = 10,776.97

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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.