Home / 3,126.69-4,680.70-1,890.36

Finding the Fourth Proportional to 3,126.69, 4,680.70 and 1,890.36

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Solution

The fourth proportional to 3,126.69, 4,680.70 and 1,890.36 is: 2,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.69 : 4,680.70 = 1,890.36 : x
  2. Step 2: Convert to fraction form
    3,126.69/4,680.70 = 1,890.36/x
  3. Step 3: Cross multiply
    3,126.69x = 4,680.70 × 1,890.36
  4. Step 4: Simplify right side
    3,126.69x = 8,848,208.05
  5. Step 5: Solve for x
    x = 8,848,208.05/3,126.69
  6. Step 6: Final answer
    x = 2,829.90

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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.