Home / 3,921.39-5,880.78-1,580.79

Finding the Fourth Proportional to 3,921.39, 5,880.78 and 1,580.79

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Solution

The fourth proportional to 3,921.39, 5,880.78 and 1,580.79 is: 2,370.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.39 : 5,880.78 = 1,580.79 : x
  2. Step 2: Convert to fraction form
    3,921.39/5,880.78 = 1,580.79/x
  3. Step 3: Cross multiply
    3,921.39x = 5,880.78 × 1,580.79
  4. Step 4: Simplify right side
    3,921.39x = 9,296,278.22
  5. Step 5: Solve for x
    x = 9,296,278.22/3,921.39
  6. Step 6: Final answer
    x = 2,370.66

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1.5x scale

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.