Home / 8,630.13-12,945.19-2,787.60

Finding the Fourth Proportional to 8,630.13, 12,945.19 and 2,787.60

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Solution

The fourth proportional to 8,630.13, 12,945.19 and 2,787.60 is: 4,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.13 : 12,945.19 = 2,787.60 : x
  2. Step 2: Convert to fraction form
    8,630.13/12,945.19 = 2,787.60/x
  3. Step 3: Cross multiply
    8,630.13x = 12,945.19 × 2,787.60
  4. Step 4: Simplify right side
    8,630.13x = 36,086,011.64
  5. Step 5: Solve for x
    x = 36,086,011.64/8,630.13
  6. Step 6: Final answer
    x = 4,181.40

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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.