Home / 8,376.98-12,564.79-3,111.71

Finding the Fourth Proportional to 8,376.98, 12,564.79 and 3,111.71

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Solution

The fourth proportional to 8,376.98, 12,564.79 and 3,111.71 is: 4,667.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.98 : 12,564.79 = 3,111.71 : x
  2. Step 2: Convert to fraction form
    8,376.98/12,564.79 = 3,111.71/x
  3. Step 3: Cross multiply
    8,376.98x = 12,564.79 × 3,111.71
  4. Step 4: Simplify right side
    8,376.98x = 39,097,912.09
  5. Step 5: Solve for x
    x = 39,097,912.09/8,376.98
  6. Step 6: Final answer
    x = 4,667.31

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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.