Home / 1,084.30-1,626.48-391.02

Finding the Fourth Proportional to 1,084.30, 1,626.48 and 391.02

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Solution

The fourth proportional to 1,084.30, 1,626.48 and 391.02 is: 586.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.30 : 1,626.48 = 391.02 : x
  2. Step 2: Convert to fraction form
    1,084.30/1,626.48 = 391.02/x
  3. Step 3: Cross multiply
    1,084.30x = 1,626.48 × 391.02
  4. Step 4: Simplify right side
    1,084.30x = 635,986.21
  5. Step 5: Solve for x
    x = 635,986.21/1,084.30
  6. Step 6: Final answer
    x = 586.54

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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.