Home / 4,409.78-6,613.92-1,290.06

Finding the Fourth Proportional to 4,409.78, 6,613.92 and 1,290.06

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Solution

The fourth proportional to 4,409.78, 6,613.92 and 1,290.06 is: 1,934.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,409.78 : 6,613.92 = 1,290.06 : x
  2. Step 2: Convert to fraction form
    4,409.78/6,613.92 = 1,290.06/x
  3. Step 3: Cross multiply
    4,409.78x = 6,613.92 × 1,290.06
  4. Step 4: Simplify right side
    4,409.78x = 8,532,353.64
  5. Step 5: Solve for x
    x = 8,532,353.64/4,409.78
  6. Step 6: Final answer
    x = 1,934.87

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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.