Home / 7,172.16-9,898.50-4,028.34

Finding the Fourth Proportional to 7,172.16, 9,898.50 and 4,028.34

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Solution

The fourth proportional to 7,172.16, 9,898.50 and 4,028.34 is: 5,559.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.16 : 9,898.50 = 4,028.34 : x
  2. Step 2: Convert to fraction form
    7,172.16/9,898.50 = 4,028.34/x
  3. Step 3: Cross multiply
    7,172.16x = 9,898.50 × 4,028.34
  4. Step 4: Simplify right side
    7,172.16x = 39,874,575.72
  5. Step 5: Solve for x
    x = 39,874,575.72/7,172.16
  6. Step 6: Final answer
    x = 5,559.64

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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.