Home / 5,284.65-7,920.10-2,161.09

Finding the Fourth Proportional to 5,284.65, 7,920.10 and 2,161.09

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Solution

The fourth proportional to 5,284.65, 7,920.10 and 2,161.09 is: 3,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.65 : 7,920.10 = 2,161.09 : x
  2. Step 2: Convert to fraction form
    5,284.65/7,920.10 = 2,161.09/x
  3. Step 3: Cross multiply
    5,284.65x = 7,920.10 × 2,161.09
  4. Step 4: Simplify right side
    5,284.65x = 17,116,023.71
  5. Step 5: Solve for x
    x = 17,116,023.71/5,284.65
  6. Step 6: Final answer
    x = 3,238.82

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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.