Home / 1,900.87-2,621.91-1,271.14

Finding the Fourth Proportional to 1,900.87, 2,621.91 and 1,271.14

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Solution

The fourth proportional to 1,900.87, 2,621.91 and 1,271.14 is: 1,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.87 : 2,621.91 = 1,271.14 : x
  2. Step 2: Convert to fraction form
    1,900.87/2,621.91 = 1,271.14/x
  3. Step 3: Cross multiply
    1,900.87x = 2,621.91 × 1,271.14
  4. Step 4: Simplify right side
    1,900.87x = 3,332,814.68
  5. Step 5: Solve for x
    x = 3,332,814.68/1,900.87
  6. Step 6: Final answer
    x = 1,753.31

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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.