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Finding the Fourth Proportional to 7,387.92, 11,084.88 and 3,005.72

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Solution

The fourth proportional to 7,387.92, 11,084.88 and 3,005.72 is: 4,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,387.92 : 11,084.88 = 3,005.72 : x
  2. Step 2: Convert to fraction form
    7,387.92/11,084.88 = 3,005.72/x
  3. Step 3: Cross multiply
    7,387.92x = 11,084.88 × 3,005.72
  4. Step 4: Simplify right side
    7,387.92x = 33,318,045.51
  5. Step 5: Solve for x
    x = 33,318,045.51/7,387.92
  6. Step 6: Final answer
    x = 4,509.80

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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.