Home / 8,112.34-12,159.60-3,181.06

Finding the Fourth Proportional to 8,112.34, 12,159.60 and 3,181.06

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Solution

The fourth proportional to 8,112.34, 12,159.60 and 3,181.06 is: 4,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.34 : 12,159.60 = 3,181.06 : x
  2. Step 2: Convert to fraction form
    8,112.34/12,159.60 = 3,181.06/x
  3. Step 3: Cross multiply
    8,112.34x = 12,159.60 × 3,181.06
  4. Step 4: Simplify right side
    8,112.34x = 38,680,417.18
  5. Step 5: Solve for x
    x = 38,680,417.18/8,112.34
  6. Step 6: Final answer
    x = 4,768.10

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1.5x scale

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.