Home / 2,681.40-4,022.10-1,992.90

Finding the Fourth Proportional to 2,681.40, 4,022.10 and 1,992.90

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Solution

The fourth proportional to 2,681.40, 4,022.10 and 1,992.90 is: 2,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.40 : 4,022.10 = 1,992.90 : x
  2. Step 2: Convert to fraction form
    2,681.40/4,022.10 = 1,992.90/x
  3. Step 3: Cross multiply
    2,681.40x = 4,022.10 × 1,992.90
  4. Step 4: Simplify right side
    2,681.40x = 8,015,643.09
  5. Step 5: Solve for x
    x = 8,015,643.09/2,681.40
  6. Step 6: Final answer
    x = 2,989.35

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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.