Home / 4,190.70-6,287.40-1,269.30

Finding the Fourth Proportional to 4,190.70, 6,287.40 and 1,269.30

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Solution

The fourth proportional to 4,190.70, 6,287.40 and 1,269.30 is: 1,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.70 : 6,287.40 = 1,269.30 : x
  2. Step 2: Convert to fraction form
    4,190.70/6,287.40 = 1,269.30/x
  3. Step 3: Cross multiply
    4,190.70x = 6,287.40 × 1,269.30
  4. Step 4: Simplify right side
    4,190.70x = 7,980,596.82
  5. Step 5: Solve for x
    x = 7,980,596.82/4,190.70
  6. Step 6: Final answer
    x = 1,904.36

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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.