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Finding the Fourth Proportional to 2,991.52, 4,479.60 and 2,730.40

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Solution

The fourth proportional to 2,991.52, 4,479.60 and 2,730.40 is: 4,088.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.52 : 4,479.60 = 2,730.40 : x
  2. Step 2: Convert to fraction form
    2,991.52/4,479.60 = 2,730.40/x
  3. Step 3: Cross multiply
    2,991.52x = 4,479.60 × 2,730.40
  4. Step 4: Simplify right side
    2,991.52x = 12,231,099.84
  5. Step 5: Solve for x
    x = 12,231,099.84/2,991.52
  6. Step 6: Final answer
    x = 4,088.59

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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.