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Finding the Fourth Proportional to 3,339.03, 5,009.01 and 1,390.78

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Solution

The fourth proportional to 3,339.03, 5,009.01 and 1,390.78 is: 2,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.03 : 5,009.01 = 1,390.78 : x
  2. Step 2: Convert to fraction form
    3,339.03/5,009.01 = 1,390.78/x
  3. Step 3: Cross multiply
    3,339.03x = 5,009.01 × 1,390.78
  4. Step 4: Simplify right side
    3,339.03x = 6,966,431.97
  5. Step 5: Solve for x
    x = 6,966,431.97/3,339.03
  6. Step 6: Final answer
    x = 2,086.36

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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.