Home / 9,181.52-12,664.86-8,005.40

Finding the Fourth Proportional to 9,181.52, 12,664.86 and 8,005.40

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Solution

The fourth proportional to 9,181.52, 12,664.86 and 8,005.40 is: 11,042.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.52 : 12,664.86 = 8,005.40 : x
  2. Step 2: Convert to fraction form
    9,181.52/12,664.86 = 8,005.40/x
  3. Step 3: Cross multiply
    9,181.52x = 12,664.86 × 8,005.40
  4. Step 4: Simplify right side
    9,181.52x = 101,387,270.24
  5. Step 5: Solve for x
    x = 101,387,270.24/9,181.52
  6. Step 6: Final answer
    x = 11,042.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.