Home / 7,172.62-9,898.41-4,028.74

Finding the Fourth Proportional to 7,172.62, 9,898.41 and 4,028.74

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Solution

The fourth proportional to 7,172.62, 9,898.41 and 4,028.74 is: 5,559.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.62 : 9,898.41 = 4,028.74 : x
  2. Step 2: Convert to fraction form
    7,172.62/9,898.41 = 4,028.74/x
  3. Step 3: Cross multiply
    7,172.62x = 9,898.41 × 4,028.74
  4. Step 4: Simplify right side
    7,172.62x = 39,878,120.30
  5. Step 5: Solve for x
    x = 39,878,120.30/7,172.62
  6. Step 6: Final answer
    x = 5,559.77

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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.