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Finding the Fourth Proportional to 3,339.12, 5,008.59 and 999.12

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Solution

The fourth proportional to 3,339.12, 5,008.59 and 999.12 is: 1,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.12 : 5,008.59 = 999.12 : x
  2. Step 2: Convert to fraction form
    3,339.12/5,008.59 = 999.12/x
  3. Step 3: Cross multiply
    3,339.12x = 5,008.59 × 999.12
  4. Step 4: Simplify right side
    3,339.12x = 5,004,182.44
  5. Step 5: Solve for x
    x = 5,004,182.44/3,339.12
  6. Step 6: Final answer
    x = 1,498.65

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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.