Home / 4,120.80-6,181.38-1,347.46

Finding the Fourth Proportional to 4,120.80, 6,181.38 and 1,347.46

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Solution

The fourth proportional to 4,120.80, 6,181.38 and 1,347.46 is: 2,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.80 : 6,181.38 = 1,347.46 : x
  2. Step 2: Convert to fraction form
    4,120.80/6,181.38 = 1,347.46/x
  3. Step 3: Cross multiply
    4,120.80x = 6,181.38 × 1,347.46
  4. Step 4: Simplify right side
    4,120.80x = 8,329,162.29
  5. Step 5: Solve for x
    x = 8,329,162.29/4,120.80
  6. Step 6: Final answer
    x = 2,021.25

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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.