Home / 6,972.21-9,621.99-3,828.47

Finding the Fourth Proportional to 6,972.21, 9,621.99 and 3,828.47

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Solution

The fourth proportional to 6,972.21, 9,621.99 and 3,828.47 is: 5,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,972.21 : 9,621.99 = 3,828.47 : x
  2. Step 2: Convert to fraction form
    6,972.21/9,621.99 = 3,828.47/x
  3. Step 3: Cross multiply
    6,972.21x = 9,621.99 × 3,828.47
  4. Step 4: Simplify right side
    6,972.21x = 36,837,451.95
  5. Step 5: Solve for x
    x = 36,837,451.95/6,972.21
  6. Step 6: Final answer
    x = 5,283.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.