Home / 3,580.60-5,370.48-1,387.84

Finding the Fourth Proportional to 3,580.60, 5,370.48 and 1,387.84

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Solution

The fourth proportional to 3,580.60, 5,370.48 and 1,387.84 is: 2,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.60 : 5,370.48 = 1,387.84 : x
  2. Step 2: Convert to fraction form
    3,580.60/5,370.48 = 1,387.84/x
  3. Step 3: Cross multiply
    3,580.60x = 5,370.48 × 1,387.84
  4. Step 4: Simplify right side
    3,580.60x = 7,453,366.96
  5. Step 5: Solve for x
    x = 7,453,366.96/3,580.60
  6. Step 6: Final answer
    x = 2,081.60

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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.