Home / 4,405.78-6,609.09-1,243.21

Finding the Fourth Proportional to 4,405.78, 6,609.09 and 1,243.21

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Solution

The fourth proportional to 4,405.78, 6,609.09 and 1,243.21 is: 1,864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,405.78 : 6,609.09 = 1,243.21 : x
  2. Step 2: Convert to fraction form
    4,405.78/6,609.09 = 1,243.21/x
  3. Step 3: Cross multiply
    4,405.78x = 6,609.09 × 1,243.21
  4. Step 4: Simplify right side
    4,405.78x = 8,216,486.78
  5. Step 5: Solve for x
    x = 8,216,486.78/4,405.78
  6. Step 6: Final answer
    x = 1,864.93

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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.