Home / 5,385.20-8,072.40-2,465.60

Finding the Fourth Proportional to 5,385.20, 8,072.40 and 2,465.60

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Solution

The fourth proportional to 5,385.20, 8,072.40 and 2,465.60 is: 3,695.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.20 : 8,072.40 = 2,465.60 : x
  2. Step 2: Convert to fraction form
    5,385.20/8,072.40 = 2,465.60/x
  3. Step 3: Cross multiply
    5,385.20x = 8,072.40 × 2,465.60
  4. Step 4: Simplify right side
    5,385.20x = 19,903,309.44
  5. Step 5: Solve for x
    x = 19,903,309.44/5,385.20
  6. Step 6: Final answer
    x = 3,695.93

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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.