Home / 5,178.48-7,761.24-4,078.50

Finding the Fourth Proportional to 5,178.48, 7,761.24 and 4,078.50

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Solution

The fourth proportional to 5,178.48, 7,761.24 and 4,078.50 is: 6,112.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.48 : 7,761.24 = 4,078.50 : x
  2. Step 2: Convert to fraction form
    5,178.48/7,761.24 = 4,078.50/x
  3. Step 3: Cross multiply
    5,178.48x = 7,761.24 × 4,078.50
  4. Step 4: Simplify right side
    5,178.48x = 31,654,196.95
  5. Step 5: Solve for x
    x = 31,654,196.95/5,178.48
  6. Step 6: Final answer
    x = 6,112.64

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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.