Home / 1,260.10-1,890.09-382.56

Finding the Fourth Proportional to 1,260.10, 1,890.09 and 382.56

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Solution

The fourth proportional to 1,260.10, 1,890.09 and 382.56 is: 573.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.10 : 1,890.09 = 382.56 : x
  2. Step 2: Convert to fraction form
    1,260.10/1,890.09 = 382.56/x
  3. Step 3: Cross multiply
    1,260.10x = 1,890.09 × 382.56
  4. Step 4: Simplify right side
    1,260.10x = 723,071.40
  5. Step 5: Solve for x
    x = 723,071.40/1,260.10
  6. Step 6: Final answer
    x = 573.82

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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.