Home / 2,810.58-4,216.72-1,990.44

Finding the Fourth Proportional to 2,810.58, 4,216.72 and 1,990.44

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Solution

The fourth proportional to 2,810.58, 4,216.72 and 1,990.44 is: 2,986.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.58 : 4,216.72 = 1,990.44 : x
  2. Step 2: Convert to fraction form
    2,810.58/4,216.72 = 1,990.44/x
  3. Step 3: Cross multiply
    2,810.58x = 4,216.72 × 1,990.44
  4. Step 4: Simplify right side
    2,810.58x = 8,393,128.16
  5. Step 5: Solve for x
    x = 8,393,128.16/2,810.58
  6. Step 6: Final answer
    x = 2,986.26

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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.