Home / 11,897-17,845.62-4,875.21

Finding the Fourth Proportional to 11,897, 17,845.62 and 4,875.21

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Solution

The fourth proportional to 11,897, 17,845.62 and 4,875.21 is: 7,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897 : 17,845.62 = 4,875.21 : x
  2. Step 2: Convert to fraction form
    11,897/17,845.62 = 4,875.21/x
  3. Step 3: Cross multiply
    11,897x = 17,845.62 × 4,875.21
  4. Step 4: Simplify right side
    11,897x = 87,001,145.08
  5. Step 5: Solve for x
    x = 87,001,145.08/11,897
  6. Step 6: Final answer
    x = 7,312.86

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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.