Home / 7,987.69-11,985.63-4,481.65

Finding the Fourth Proportional to 7,987.69, 11,985.63 and 4,481.65

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Solution

The fourth proportional to 7,987.69, 11,985.63 and 4,481.65 is: 6,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.69 : 11,985.63 = 4,481.65 : x
  2. Step 2: Convert to fraction form
    7,987.69/11,985.63 = 4,481.65/x
  3. Step 3: Cross multiply
    7,987.69x = 11,985.63 × 4,481.65
  4. Step 4: Simplify right side
    7,987.69x = 53,715,398.69
  5. Step 5: Solve for x
    x = 53,715,398.69/7,987.69
  6. Step 6: Final answer
    x = 6,724.77

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1.5x scale

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.