Home / 2,020.10-3,030.15-519.12

Finding the Fourth Proportional to 2,020.10, 3,030.15 and 519.12

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Solution

The fourth proportional to 2,020.10, 3,030.15 and 519.12 is: 778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.10 : 3,030.15 = 519.12 : x
  2. Step 2: Convert to fraction form
    2,020.10/3,030.15 = 519.12/x
  3. Step 3: Cross multiply
    2,020.10x = 3,030.15 × 519.12
  4. Step 4: Simplify right side
    2,020.10x = 1,573,014.14
  5. Step 5: Solve for x
    x = 1,573,014.14/2,020.10
  6. Step 6: Final answer
    x = 778.68

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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.