Home / 7,890.21-11,828.03-6,417.63

Finding the Fourth Proportional to 7,890.21, 11,828.03 and 6,417.63

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Solution

The fourth proportional to 7,890.21, 11,828.03 and 6,417.63 is: 9,620.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.21 : 11,828.03 = 6,417.63 : x
  2. Step 2: Convert to fraction form
    7,890.21/11,828.03 = 6,417.63/x
  3. Step 3: Cross multiply
    7,890.21x = 11,828.03 × 6,417.63
  4. Step 4: Simplify right side
    7,890.21x = 75,907,888.08
  5. Step 5: Solve for x
    x = 75,907,888.08/7,890.21
  6. Step 6: Final answer
    x = 9,620.52

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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.