Home / 2,986.99-4,121.40-2,030.23

Finding the Fourth Proportional to 2,986.99, 4,121.40 and 2,030.23

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Solution

The fourth proportional to 2,986.99, 4,121.40 and 2,030.23 is: 2,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.99 : 4,121.40 = 2,030.23 : x
  2. Step 2: Convert to fraction form
    2,986.99/4,121.40 = 2,030.23/x
  3. Step 3: Cross multiply
    2,986.99x = 4,121.40 × 2,030.23
  4. Step 4: Simplify right side
    2,986.99x = 8,367,369.32
  5. Step 5: Solve for x
    x = 8,367,369.32/2,986.99
  6. Step 6: Final answer
    x = 2,801.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.