Home / 8,971.14-12,379.82-4,992.12

Finding the Fourth Proportional to 8,971.14, 12,379.82 and 4,992.12

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Solution

The fourth proportional to 8,971.14, 12,379.82 and 4,992.12 is: 6,888.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.14 : 12,379.82 = 4,992.12 : x
  2. Step 2: Convert to fraction form
    8,971.14/12,379.82 = 4,992.12/x
  3. Step 3: Cross multiply
    8,971.14x = 12,379.82 × 4,992.12
  4. Step 4: Simplify right side
    8,971.14x = 61,801,547.02
  5. Step 5: Solve for x
    x = 61,801,547.02/8,971.14
  6. Step 6: Final answer
    x = 6,888.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.