Home / 8,431.55-12,645.69-2,586.59

Finding the Fourth Proportional to 8,431.55, 12,645.69 and 2,586.59

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Solution

The fourth proportional to 8,431.55, 12,645.69 and 2,586.59 is: 3,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.55 : 12,645.69 = 2,586.59 : x
  2. Step 2: Convert to fraction form
    8,431.55/12,645.69 = 2,586.59/x
  3. Step 3: Cross multiply
    8,431.55x = 12,645.69 × 2,586.59
  4. Step 4: Simplify right side
    8,431.55x = 32,709,152.07
  5. Step 5: Solve for x
    x = 32,709,152.07/8,431.55
  6. Step 6: Final answer
    x = 3,879.38

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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.