Home / 7,074.21-9,762.13-3,930.60

Finding the Fourth Proportional to 7,074.21, 9,762.13 and 3,930.60

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Solution

The fourth proportional to 7,074.21, 9,762.13 and 3,930.60 is: 5,424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.21 : 9,762.13 = 3,930.60 : x
  2. Step 2: Convert to fraction form
    7,074.21/9,762.13 = 3,930.60/x
  3. Step 3: Cross multiply
    7,074.21x = 9,762.13 × 3,930.60
  4. Step 4: Simplify right side
    7,074.21x = 38,371,028.18
  5. Step 5: Solve for x
    x = 38,371,028.18/7,074.21
  6. Step 6: Final answer
    x = 5,424.07

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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.