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Finding the Fourth Proportional to 3,339.29, 5,009.63 and 999.47

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Solution

The fourth proportional to 3,339.29, 5,009.63 and 999.47 is: 1,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.29 : 5,009.63 = 999.47 : x
  2. Step 2: Convert to fraction form
    3,339.29/5,009.63 = 999.47/x
  3. Step 3: Cross multiply
    3,339.29x = 5,009.63 × 999.47
  4. Step 4: Simplify right side
    3,339.29x = 5,006,989.92
  5. Step 5: Solve for x
    x = 5,006,989.92/3,339.29
  6. Step 6: Final answer
    x = 1,499.42

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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.