Home / 8,179.72-12,264.06-2,631.40

Finding the Fourth Proportional to 8,179.72, 12,264.06 and 2,631.40

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Solution

The fourth proportional to 8,179.72, 12,264.06 and 2,631.40 is: 3,945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.72 : 12,264.06 = 2,631.40 : x
  2. Step 2: Convert to fraction form
    8,179.72/12,264.06 = 2,631.40/x
  3. Step 3: Cross multiply
    8,179.72x = 12,264.06 × 2,631.40
  4. Step 4: Simplify right side
    8,179.72x = 32,271,647.48
  5. Step 5: Solve for x
    x = 32,271,647.48/8,179.72
  6. Step 6: Final answer
    x = 3,945.32

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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.