Home / 4,147.80-6,221.70-1,374.90

Finding the Fourth Proportional to 4,147.80, 6,221.70 and 1,374.90

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Solution

The fourth proportional to 4,147.80, 6,221.70 and 1,374.90 is: 2,062.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,147.80 : 6,221.70 = 1,374.90 : x
  2. Step 2: Convert to fraction form
    4,147.80/6,221.70 = 1,374.90/x
  3. Step 3: Cross multiply
    4,147.80x = 6,221.70 × 1,374.90
  4. Step 4: Simplify right side
    4,147.80x = 8,554,215.33
  5. Step 5: Solve for x
    x = 8,554,215.33/4,147.80
  6. Step 6: Final answer
    x = 2,062.35

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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.