Home / 1,485.87-2,228.82-1,440.76

Finding the Fourth Proportional to 1,485.87, 2,228.82 and 1,440.76

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Solution

The fourth proportional to 1,485.87, 2,228.82 and 1,440.76 is: 2,161.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.87 : 2,228.82 = 1,440.76 : x
  2. Step 2: Convert to fraction form
    1,485.87/2,228.82 = 1,440.76/x
  3. Step 3: Cross multiply
    1,485.87x = 2,228.82 × 1,440.76
  4. Step 4: Simplify right side
    1,485.87x = 3,211,194.70
  5. Step 5: Solve for x
    x = 3,211,194.70/1,485.87
  6. Step 6: Final answer
    x = 2,161.15

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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.