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Finding the Fourth Proportional to 7,990.19, 11,987.01 and 3,059.83

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Solution

The fourth proportional to 7,990.19, 11,987.01 and 3,059.83 is: 4,590.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.19 : 11,987.01 = 3,059.83 : x
  2. Step 2: Convert to fraction form
    7,990.19/11,987.01 = 3,059.83/x
  3. Step 3: Cross multiply
    7,990.19x = 11,987.01 × 3,059.83
  4. Step 4: Simplify right side
    7,990.19x = 36,678,182.84
  5. Step 5: Solve for x
    x = 36,678,182.84/7,990.19
  6. Step 6: Final answer
    x = 4,590.40

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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.