Home / 2,030.80-3,042.55-1,921.45

Finding the Fourth Proportional to 2,030.80, 3,042.55 and 1,921.45

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Solution

The fourth proportional to 2,030.80, 3,042.55 and 1,921.45 is: 2,878.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,030.80 : 3,042.55 = 1,921.45 : x
  2. Step 2: Convert to fraction form
    2,030.80/3,042.55 = 1,921.45/x
  3. Step 3: Cross multiply
    2,030.80x = 3,042.55 × 1,921.45
  4. Step 4: Simplify right side
    2,030.80x = 5,846,107.70
  5. Step 5: Solve for x
    x = 5,846,107.70/2,030.80
  6. Step 6: Final answer
    x = 2,878.72

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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.