Home / 7,986.15-11,020.86-4,629.65

Finding the Fourth Proportional to 7,986.15, 11,020.86 and 4,629.65

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Solution

The fourth proportional to 7,986.15, 11,020.86 and 4,629.65 is: 6,388.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.15 : 11,020.86 = 4,629.65 : x
  2. Step 2: Convert to fraction form
    7,986.15/11,020.86 = 4,629.65/x
  3. Step 3: Cross multiply
    7,986.15x = 11,020.86 × 4,629.65
  4. Step 4: Simplify right side
    7,986.15x = 51,022,669.39
  5. Step 5: Solve for x
    x = 51,022,669.39/7,986.15
  6. Step 6: Final answer
    x = 6,388.89

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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.