Home / 7,172.64-9,898.29-4,028.88

Finding the Fourth Proportional to 7,172.64, 9,898.29 and 4,028.88

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Solution

The fourth proportional to 7,172.64, 9,898.29 and 4,028.88 is: 5,559.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.64 : 9,898.29 = 4,028.88 : x
  2. Step 2: Convert to fraction form
    7,172.64/9,898.29 = 4,028.88/x
  3. Step 3: Cross multiply
    7,172.64x = 9,898.29 × 4,028.88
  4. Step 4: Simplify right side
    7,172.64x = 39,879,022.62
  5. Step 5: Solve for x
    x = 39,879,022.62/7,172.64
  6. Step 6: Final answer
    x = 5,559.88

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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.