Home / 4,286.80-6,430.86-1,821.63

Finding the Fourth Proportional to 4,286.80, 6,430.86 and 1,821.63

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Solution

The fourth proportional to 4,286.80, 6,430.86 and 1,821.63 is: 2,732.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.80 : 6,430.86 = 1,821.63 : x
  2. Step 2: Convert to fraction form
    4,286.80/6,430.86 = 1,821.63/x
  3. Step 3: Cross multiply
    4,286.80x = 6,430.86 × 1,821.63
  4. Step 4: Simplify right side
    4,286.80x = 11,714,647.50
  5. Step 5: Solve for x
    x = 11,714,647.50/4,286.80
  6. Step 6: Final answer
    x = 2,732.73

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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.