Home / 8,176.52-12,261.14-2,978.76

Finding the Fourth Proportional to 8,176.52, 12,261.14 and 2,978.76

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Solution

The fourth proportional to 8,176.52, 12,261.14 and 2,978.76 is: 4,466.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,176.52 : 12,261.14 = 2,978.76 : x
  2. Step 2: Convert to fraction form
    8,176.52/12,261.14 = 2,978.76/x
  3. Step 3: Cross multiply
    8,176.52x = 12,261.14 × 2,978.76
  4. Step 4: Simplify right side
    8,176.52x = 36,522,993.39
  5. Step 5: Solve for x
    x = 36,522,993.39/8,176.52
  6. Step 6: Final answer
    x = 4,466.81

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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.