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Finding the Fourth Proportional to 7,986.69, 11,980.86 and 3,060.45

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Solution

The fourth proportional to 7,986.69, 11,980.86 and 3,060.45 is: 4,590.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.69 : 11,980.86 = 3,060.45 : x
  2. Step 2: Convert to fraction form
    7,986.69/11,980.86 = 3,060.45/x
  3. Step 3: Cross multiply
    7,986.69x = 11,980.86 × 3,060.45
  4. Step 4: Simplify right side
    7,986.69x = 36,666,822.99
  5. Step 5: Solve for x
    x = 36,666,822.99/7,986.69
  6. Step 6: Final answer
    x = 4,590.99

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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.