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Finding the Fourth Proportional to 7,988.93, 11,977.72 and 3,054.41

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Solution

The fourth proportional to 7,988.93, 11,977.72 and 3,054.41 is: 4,579.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.93 : 11,977.72 = 3,054.41 : x
  2. Step 2: Convert to fraction form
    7,988.93/11,977.72 = 3,054.41/x
  3. Step 3: Cross multiply
    7,988.93x = 11,977.72 × 3,054.41
  4. Step 4: Simplify right side
    7,988.93x = 36,584,867.75
  5. Step 5: Solve for x
    x = 36,584,867.75/7,988.93
  6. Step 6: Final answer
    x = 4,579.45

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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.