Home / 2,919.81-4,028.76-1,800.30

Finding the Fourth Proportional to 2,919.81, 4,028.76 and 1,800.30

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Solution

The fourth proportional to 2,919.81, 4,028.76 and 1,800.30 is: 2,484.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.81 : 4,028.76 = 1,800.30 : x
  2. Step 2: Convert to fraction form
    2,919.81/4,028.76 = 1,800.30/x
  3. Step 3: Cross multiply
    2,919.81x = 4,028.76 × 1,800.30
  4. Step 4: Simplify right side
    2,919.81x = 7,252,976.63
  5. Step 5: Solve for x
    x = 7,252,976.63/2,919.81
  6. Step 6: Final answer
    x = 2,484.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.