Home / 7,385.39-10,191.71-4,028.21

Finding the Fourth Proportional to 7,385.39, 10,191.71 and 4,028.21

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Solution

The fourth proportional to 7,385.39, 10,191.71 and 4,028.21 is: 5,558.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.39 : 10,191.71 = 4,028.21 : x
  2. Step 2: Convert to fraction form
    7,385.39/10,191.71 = 4,028.21/x
  3. Step 3: Cross multiply
    7,385.39x = 10,191.71 × 4,028.21
  4. Step 4: Simplify right side
    7,385.39x = 41,054,277.04
  5. Step 5: Solve for x
    x = 41,054,277.04/7,385.39
  6. Step 6: Final answer
    x = 5,558.85

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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.