Home / 2,015.45-3,020.40-1,521.43

Finding the Fourth Proportional to 2,015.45, 3,020.40 and 1,521.43

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Solution

The fourth proportional to 2,015.45, 3,020.40 and 1,521.43 is: 2,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.45 : 3,020.40 = 1,521.43 : x
  2. Step 2: Convert to fraction form
    2,015.45/3,020.40 = 1,521.43/x
  3. Step 3: Cross multiply
    2,015.45x = 3,020.40 × 1,521.43
  4. Step 4: Simplify right side
    2,015.45x = 4,595,319.62
  5. Step 5: Solve for x
    x = 4,595,319.62/2,015.45
  6. Step 6: Final answer
    x = 2,280.05

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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.