Home / 3,239.98-4,856.28-1,390.15

Finding the Fourth Proportional to 3,239.98, 4,856.28 and 1,390.15

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Solution

The fourth proportional to 3,239.98, 4,856.28 and 1,390.15 is: 2,083.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.98 : 4,856.28 = 1,390.15 : x
  2. Step 2: Convert to fraction form
    3,239.98/4,856.28 = 1,390.15/x
  3. Step 3: Cross multiply
    3,239.98x = 4,856.28 × 1,390.15
  4. Step 4: Simplify right side
    3,239.98x = 6,750,933.36
  5. Step 5: Solve for x
    x = 6,750,933.36/3,239.98
  6. Step 6: Final answer
    x = 2,083.64

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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.