Home / 8,289.72-11,440.62-6,190.20

Finding the Fourth Proportional to 8,289.72, 11,440.62 and 6,190.20

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Solution

The fourth proportional to 8,289.72, 11,440.62 and 6,190.20 is: 8,543.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.72 : 11,440.62 = 6,190.20 : x
  2. Step 2: Convert to fraction form
    8,289.72/11,440.62 = 6,190.20/x
  3. Step 3: Cross multiply
    8,289.72x = 11,440.62 × 6,190.20
  4. Step 4: Simplify right side
    8,289.72x = 70,819,725.92
  5. Step 5: Solve for x
    x = 70,819,725.92/8,289.72
  6. Step 6: Final answer
    x = 8,543.08

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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.