Home / 3,339.15-5,008.69-1,390.90

Finding the Fourth Proportional to 3,339.15, 5,008.69 and 1,390.90

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Solution

The fourth proportional to 3,339.15, 5,008.69 and 1,390.90 is: 2,086.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.15 : 5,008.69 = 1,390.90 : x
  2. Step 2: Convert to fraction form
    3,339.15/5,008.69 = 1,390.90/x
  3. Step 3: Cross multiply
    3,339.15x = 5,008.69 × 1,390.90
  4. Step 4: Simplify right side
    3,339.15x = 6,966,586.92
  5. Step 5: Solve for x
    x = 6,966,586.92/3,339.15
  6. Step 6: Final answer
    x = 2,086.34

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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.