Home / 2,963.95-4,090.88-2,021.99

Finding the Fourth Proportional to 2,963.95, 4,090.88 and 2,021.99

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Solution

The fourth proportional to 2,963.95, 4,090.88 and 2,021.99 is: 2,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.95 : 4,090.88 = 2,021.99 : x
  2. Step 2: Convert to fraction form
    2,963.95/4,090.88 = 2,021.99/x
  3. Step 3: Cross multiply
    2,963.95x = 4,090.88 × 2,021.99
  4. Step 4: Simplify right side
    2,963.95x = 8,271,703.05
  5. Step 5: Solve for x
    x = 8,271,703.05/2,963.95
  6. Step 6: Final answer
    x = 2,790.77

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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.