Home / 8,738.55-13,109.58-3,191.40

Finding the Fourth Proportional to 8,738.55, 13,109.58 and 3,191.40

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Solution

The fourth proportional to 8,738.55, 13,109.58 and 3,191.40 is: 4,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,738.55 : 13,109.58 = 3,191.40 : x
  2. Step 2: Convert to fraction form
    8,738.55/13,109.58 = 3,191.40/x
  3. Step 3: Cross multiply
    8,738.55x = 13,109.58 × 3,191.40
  4. Step 4: Simplify right side
    8,738.55x = 41,837,913.61
  5. Step 5: Solve for x
    x = 41,837,913.61/8,738.55
  6. Step 6: Final answer
    x = 4,787.74

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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.