Home / 8,686.09-11,986.41-4,909.60

Finding the Fourth Proportional to 8,686.09, 11,986.41 and 4,909.60

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Solution

The fourth proportional to 8,686.09, 11,986.41 and 4,909.60 is: 6,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.09 : 11,986.41 = 4,909.60 : x
  2. Step 2: Convert to fraction form
    8,686.09/11,986.41 = 4,909.60/x
  3. Step 3: Cross multiply
    8,686.09x = 11,986.41 × 4,909.60
  4. Step 4: Simplify right side
    8,686.09x = 58,848,478.54
  5. Step 5: Solve for x
    x = 58,848,478.54/8,686.09
  6. Step 6: Final answer
    x = 6,775.03

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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.