Home / 9,109.09-13,660.93-3,913.75

Finding the Fourth Proportional to 9,109.09, 13,660.93 and 3,913.75

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Solution

The fourth proportional to 9,109.09, 13,660.93 and 3,913.75 is: 5,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.09 : 13,660.93 = 3,913.75 : x
  2. Step 2: Convert to fraction form
    9,109.09/13,660.93 = 3,913.75/x
  3. Step 3: Cross multiply
    9,109.09x = 13,660.93 × 3,913.75
  4. Step 4: Simplify right side
    9,109.09x = 53,465,464.79
  5. Step 5: Solve for x
    x = 53,465,464.79/9,109.09
  6. Step 6: Final answer
    x = 5,869.46

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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.