Home / 5,745.60-7,929.96-3,387.60

Finding the Fourth Proportional to 5,745.60, 7,929.96 and 3,387.60

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Solution

The fourth proportional to 5,745.60, 7,929.96 and 3,387.60 is: 4,675.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,745.60 : 7,929.96 = 3,387.60 : x
  2. Step 2: Convert to fraction form
    5,745.60/7,929.96 = 3,387.60/x
  3. Step 3: Cross multiply
    5,745.60x = 7,929.96 × 3,387.60
  4. Step 4: Simplify right side
    5,745.60x = 26,863,532.50
  5. Step 5: Solve for x
    x = 26,863,532.50/5,745.60
  6. Step 6: Final answer
    x = 4,675.50

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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.