Home / 8,630.85-12,938.36-2,784.45

Finding the Fourth Proportional to 8,630.85, 12,938.36 and 2,784.45

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Solution

The fourth proportional to 8,630.85, 12,938.36 and 2,784.45 is: 4,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.85 : 12,938.36 = 2,784.45 : x
  2. Step 2: Convert to fraction form
    8,630.85/12,938.36 = 2,784.45/x
  3. Step 3: Cross multiply
    8,630.85x = 12,938.36 × 2,784.45
  4. Step 4: Simplify right side
    8,630.85x = 36,026,202.58
  5. Step 5: Solve for x
    x = 36,026,202.58/8,630.85
  6. Step 6: Final answer
    x = 4,174.12

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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.