Home / 7,385.08-11,078.72-2,385.78

Finding the Fourth Proportional to 7,385.08, 11,078.72 and 2,385.78

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Solution

The fourth proportional to 7,385.08, 11,078.72 and 2,385.78 is: 3,579.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,385.08 : 11,078.72 = 2,385.78 : x
  2. Step 2: Convert to fraction form
    7,385.08/11,078.72 = 2,385.78/x
  3. Step 3: Cross multiply
    7,385.08x = 11,078.72 × 2,385.78
  4. Step 4: Simplify right side
    7,385.08x = 26,431,394.57
  5. Step 5: Solve for x
    x = 26,431,394.57/7,385.08
  6. Step 6: Final answer
    x = 3,579.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.