Home / 5,609.31-8,412.80-1,911.51

Finding the Fourth Proportional to 5,609.31, 8,412.80 and 1,911.51

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Solution

The fourth proportional to 5,609.31, 8,412.80 and 1,911.51 is: 2,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,609.31 : 8,412.80 = 1,911.51 : x
  2. Step 2: Convert to fraction form
    5,609.31/8,412.80 = 1,911.51/x
  3. Step 3: Cross multiply
    5,609.31x = 8,412.80 × 1,911.51
  4. Step 4: Simplify right side
    5,609.31x = 16,081,141.77
  5. Step 5: Solve for x
    x = 16,081,141.77/5,609.31
  6. Step 6: Final answer
    x = 2,866.87

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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.