Home / 4,221.36-6,330.76-1,260

Finding the Fourth Proportional to 4,221.36, 6,330.76 and 1,260

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Solution

The fourth proportional to 4,221.36, 6,330.76 and 1,260 is: 1,889.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.36 : 6,330.76 = 1,260 : x
  2. Step 2: Convert to fraction form
    4,221.36/6,330.76 = 1,260/x
  3. Step 3: Cross multiply
    4,221.36x = 6,330.76 × 1,260
  4. Step 4: Simplify right side
    4,221.36x = 7,976,757.60
  5. Step 5: Solve for x
    x = 7,976,757.60/4,221.36
  6. Step 6: Final answer
    x = 1,889.62

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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.