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Finding the Fourth Proportional to 2,020.78, 3,030.25 and 633.79

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Solution

The fourth proportional to 2,020.78, 3,030.25 and 633.79 is: 950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.78 : 3,030.25 = 633.79 : x
  2. Step 2: Convert to fraction form
    2,020.78/3,030.25 = 633.79/x
  3. Step 3: Cross multiply
    2,020.78x = 3,030.25 × 633.79
  4. Step 4: Simplify right side
    2,020.78x = 1,920,527.00
  5. Step 5: Solve for x
    x = 1,920,527.00/2,020.78
  6. Step 6: Final answer
    x = 950.39

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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.