Home / 11,790.34-17,685.78-3,890.32

Finding the Fourth Proportional to 11,790.34, 17,685.78 and 3,890.32

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Solution

The fourth proportional to 11,790.34, 17,685.78 and 3,890.32 is: 5,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,790.34 : 17,685.78 = 3,890.32 : x
  2. Step 2: Convert to fraction form
    11,790.34/17,685.78 = 3,890.32/x
  3. Step 3: Cross multiply
    11,790.34x = 17,685.78 × 3,890.32
  4. Step 4: Simplify right side
    11,790.34x = 68,803,343.65
  5. Step 5: Solve for x
    x = 68,803,343.65/11,790.34
  6. Step 6: Final answer
    x = 5,835.57

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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.