Home / 11,072.80-16,609.20-3,678.40

Finding the Fourth Proportional to 11,072.80, 16,609.20 and 3,678.40

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Solution

The fourth proportional to 11,072.80, 16,609.20 and 3,678.40 is: 5,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,072.80 : 16,609.20 = 3,678.40 : x
  2. Step 2: Convert to fraction form
    11,072.80/16,609.20 = 3,678.40/x
  3. Step 3: Cross multiply
    11,072.80x = 16,609.20 × 3,678.40
  4. Step 4: Simplify right side
    11,072.80x = 61,095,281.28
  5. Step 5: Solve for x
    x = 61,095,281.28/11,072.80
  6. Step 6: Final answer
    x = 5,517.60

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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.