Home / 5,485.30-8,222.55-2,712.40

Finding the Fourth Proportional to 5,485.30, 8,222.55 and 2,712.40

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Solution

The fourth proportional to 5,485.30, 8,222.55 and 2,712.40 is: 4,065.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.30 : 8,222.55 = 2,712.40 : x
  2. Step 2: Convert to fraction form
    5,485.30/8,222.55 = 2,712.40/x
  3. Step 3: Cross multiply
    5,485.30x = 8,222.55 × 2,712.40
  4. Step 4: Simplify right side
    5,485.30x = 22,302,844.62
  5. Step 5: Solve for x
    x = 22,302,844.62/5,485.30
  6. Step 6: Final answer
    x = 4,065.93

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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.