Home / 11,858-17,789.34-5,280.80

Finding the Fourth Proportional to 11,858, 17,789.34 and 5,280.80

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Solution

The fourth proportional to 11,858, 17,789.34 and 5,280.80 is: 7,922.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,858 : 17,789.34 = 5,280.80 : x
  2. Step 2: Convert to fraction form
    11,858/17,789.34 = 5,280.80/x
  3. Step 3: Cross multiply
    11,858x = 17,789.34 × 5,280.80
  4. Step 4: Simplify right side
    11,858x = 93,941,946.67
  5. Step 5: Solve for x
    x = 93,941,946.67/11,858
  6. Step 6: Final answer
    x = 7,922.24

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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.