Home / 8,132.45-12,129.96-7,886.35

Finding the Fourth Proportional to 8,132.45, 12,129.96 and 7,886.35

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Solution

The fourth proportional to 8,132.45, 12,129.96 and 7,886.35 is: 11,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.45 : 12,129.96 = 7,886.35 : x
  2. Step 2: Convert to fraction form
    8,132.45/12,129.96 = 7,886.35/x
  3. Step 3: Cross multiply
    8,132.45x = 12,129.96 × 7,886.35
  4. Step 4: Simplify right side
    8,132.45x = 95,661,110.05
  5. Step 5: Solve for x
    x = 95,661,110.05/8,132.45
  6. Step 6: Final answer
    x = 11,762.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.