Home / 2,020.95-3,030.66-788.21

Finding the Fourth Proportional to 2,020.95, 3,030.66 and 788.21

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Solution

The fourth proportional to 2,020.95, 3,030.66 and 788.21 is: 1,182.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.95 : 3,030.66 = 788.21 : x
  2. Step 2: Convert to fraction form
    2,020.95/3,030.66 = 788.21/x
  3. Step 3: Cross multiply
    2,020.95x = 3,030.66 × 788.21
  4. Step 4: Simplify right side
    2,020.95x = 2,388,796.52
  5. Step 5: Solve for x
    x = 2,388,796.52/2,020.95
  6. Step 6: Final answer
    x = 1,182.02

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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.