Home / 1,900.36-2,623.70-1,238.28

Finding the Fourth Proportional to 1,900.36, 2,623.70 and 1,238.28

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Solution

The fourth proportional to 1,900.36, 2,623.70 and 1,238.28 is: 1,709.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,900.36 : 2,623.70 = 1,238.28 : x
  2. Step 2: Convert to fraction form
    1,900.36/2,623.70 = 1,238.28/x
  3. Step 3: Cross multiply
    1,900.36x = 2,623.70 × 1,238.28
  4. Step 4: Simplify right side
    1,900.36x = 3,248,875.24
  5. Step 5: Solve for x
    x = 3,248,875.24/1,900.36
  6. Step 6: Final answer
    x = 1,709.61

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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.