Home / 1,260.13-1,890.48-394.51

Finding the Fourth Proportional to 1,260.13, 1,890.48 and 394.51

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Solution

The fourth proportional to 1,260.13, 1,890.48 and 394.51 is: 591.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.13 : 1,890.48 = 394.51 : x
  2. Step 2: Convert to fraction form
    1,260.13/1,890.48 = 394.51/x
  3. Step 3: Cross multiply
    1,260.13x = 1,890.48 × 394.51
  4. Step 4: Simplify right side
    1,260.13x = 745,813.26
  5. Step 5: Solve for x
    x = 745,813.26/1,260.13
  6. Step 6: Final answer
    x = 591.85

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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.