Home / 8,645.94-11,931.75-5,109.03

Finding the Fourth Proportional to 8,645.94, 11,931.75 and 5,109.03

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Solution

The fourth proportional to 8,645.94, 11,931.75 and 5,109.03 is: 7,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.94 : 11,931.75 = 5,109.03 : x
  2. Step 2: Convert to fraction form
    8,645.94/11,931.75 = 5,109.03/x
  3. Step 3: Cross multiply
    8,645.94x = 11,931.75 × 5,109.03
  4. Step 4: Simplify right side
    8,645.94x = 60,959,668.70
  5. Step 5: Solve for x
    x = 60,959,668.70/8,645.94
  6. Step 6: Final answer
    x = 7,050.67

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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.