Home / 4,210.82-6,315.99-1,289.12

Finding the Fourth Proportional to 4,210.82, 6,315.99 and 1,289.12

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Solution

The fourth proportional to 4,210.82, 6,315.99 and 1,289.12 is: 1,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,210.82 : 6,315.99 = 1,289.12 : x
  2. Step 2: Convert to fraction form
    4,210.82/6,315.99 = 1,289.12/x
  3. Step 3: Cross multiply
    4,210.82x = 6,315.99 × 1,289.12
  4. Step 4: Simplify right side
    4,210.82x = 8,142,037.45
  5. Step 5: Solve for x
    x = 8,142,037.45/4,210.82
  6. Step 6: Final answer
    x = 1,933.60

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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.