Home / 8,622.72-12,930.40-3,077.48

Finding the Fourth Proportional to 8,622.72, 12,930.40 and 3,077.48

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Solution

The fourth proportional to 8,622.72, 12,930.40 and 3,077.48 is: 4,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.72 : 12,930.40 = 3,077.48 : x
  2. Step 2: Convert to fraction form
    8,622.72/12,930.40 = 3,077.48/x
  3. Step 3: Cross multiply
    8,622.72x = 12,930.40 × 3,077.48
  4. Step 4: Simplify right side
    8,622.72x = 39,793,047.39
  5. Step 5: Solve for x
    x = 39,793,047.39/8,622.72
  6. Step 6: Final answer
    x = 4,614.91

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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.