Home / 7,490.83-11,222.40-3,784.21

Finding the Fourth Proportional to 7,490.83, 11,222.40 and 3,784.21

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Solution

The fourth proportional to 7,490.83, 11,222.40 and 3,784.21 is: 5,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.83 : 11,222.40 = 3,784.21 : x
  2. Step 2: Convert to fraction form
    7,490.83/11,222.40 = 3,784.21/x
  3. Step 3: Cross multiply
    7,490.83x = 11,222.40 × 3,784.21
  4. Step 4: Simplify right side
    7,490.83x = 42,467,918.30
  5. Step 5: Solve for x
    x = 42,467,918.30/7,490.83
  6. Step 6: Final answer
    x = 5,669.32

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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.