Home / 8,567.18-11,811.87-7,289.78

Finding the Fourth Proportional to 8,567.18, 11,811.87 and 7,289.78

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Solution

The fourth proportional to 8,567.18, 11,811.87 and 7,289.78 is: 10,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,567.18 : 11,811.87 = 7,289.78 : x
  2. Step 2: Convert to fraction form
    8,567.18/11,811.87 = 7,289.78/x
  3. Step 3: Cross multiply
    8,567.18x = 11,811.87 × 7,289.78
  4. Step 4: Simplify right side
    8,567.18x = 86,105,933.69
  5. Step 5: Solve for x
    x = 86,105,933.69/8,567.18
  6. Step 6: Final answer
    x = 10,050.67

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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.