Home / 1,260.46-1,890.84-439.02

Finding the Fourth Proportional to 1,260.46, 1,890.84 and 439.02

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Solution

The fourth proportional to 1,260.46, 1,890.84 and 439.02 is: 658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.46 : 1,890.84 = 439.02 : x
  2. Step 2: Convert to fraction form
    1,260.46/1,890.84 = 439.02/x
  3. Step 3: Cross multiply
    1,260.46x = 1,890.84 × 439.02
  4. Step 4: Simplify right side
    1,260.46x = 830,118.22
  5. Step 5: Solve for x
    x = 830,118.22/1,260.46
  6. Step 6: Final answer
    x = 658.58

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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.