Home / 11,880.38-17,808.08-3,980.94

Finding the Fourth Proportional to 11,880.38, 17,808.08 and 3,980.94

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Solution

The fourth proportional to 11,880.38, 17,808.08 and 3,980.94 is: 5,967.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,880.38 : 17,808.08 = 3,980.94 : x
  2. Step 2: Convert to fraction form
    11,880.38/17,808.08 = 3,980.94/x
  3. Step 3: Cross multiply
    11,880.38x = 17,808.08 × 3,980.94
  4. Step 4: Simplify right side
    11,880.38x = 70,892,878.09
  5. Step 5: Solve for x
    x = 70,892,878.09/11,880.38
  6. Step 6: Final answer
    x = 5,967.23

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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.