Home / 5,385.10-8,078.82-4,840.78

Finding the Fourth Proportional to 5,385.10, 8,078.82 and 4,840.78

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Solution

The fourth proportional to 5,385.10, 8,078.82 and 4,840.78 is: 7,262.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.10 : 8,078.82 = 4,840.78 : x
  2. Step 2: Convert to fraction form
    5,385.10/8,078.82 = 4,840.78/x
  3. Step 3: Cross multiply
    5,385.10x = 8,078.82 × 4,840.78
  4. Step 4: Simplify right side
    5,385.10x = 39,107,790.28
  5. Step 5: Solve for x
    x = 39,107,790.28/5,385.10
  6. Step 6: Final answer
    x = 7,262.22

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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.