Home / 1,828.60-2,520.30-1,238.92

Finding the Fourth Proportional to 1,828.60, 2,520.30 and 1,238.92

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Solution

The fourth proportional to 1,828.60, 2,520.30 and 1,238.92 is: 1,707.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,828.60 : 2,520.30 = 1,238.92 : x
  2. Step 2: Convert to fraction form
    1,828.60/2,520.30 = 1,238.92/x
  3. Step 3: Cross multiply
    1,828.60x = 2,520.30 × 1,238.92
  4. Step 4: Simplify right side
    1,828.60x = 3,122,450.08
  5. Step 5: Solve for x
    x = 3,122,450.08/1,828.60
  6. Step 6: Final answer
    x = 1,707.56

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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.