Home / 2,019.04-3,022.28-1,289.20

Finding the Fourth Proportional to 2,019.04, 3,022.28 and 1,289.20

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Solution

The fourth proportional to 2,019.04, 3,022.28 and 1,289.20 is: 1,929.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.04 : 3,022.28 = 1,289.20 : x
  2. Step 2: Convert to fraction form
    2,019.04/3,022.28 = 1,289.20/x
  3. Step 3: Cross multiply
    2,019.04x = 3,022.28 × 1,289.20
  4. Step 4: Simplify right side
    2,019.04x = 3,896,323.38
  5. Step 5: Solve for x
    x = 3,896,323.38/2,019.04
  6. Step 6: Final answer
    x = 1,929.79

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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.