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Finding the Fourth Proportional to 9,990.08, 14,978.88 and 4,794.88

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Solution

The fourth proportional to 9,990.08, 14,978.88 and 4,794.88 is: 7,189.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.08 : 14,978.88 = 4,794.88 : x
  2. Step 2: Convert to fraction form
    9,990.08/14,978.88 = 4,794.88/x
  3. Step 3: Cross multiply
    9,990.08x = 14,978.88 × 4,794.88
  4. Step 4: Simplify right side
    9,990.08x = 71,821,932.13
  5. Step 5: Solve for x
    x = 71,821,932.13/9,990.08
  6. Step 6: Final answer
    x = 7,189.33

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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.