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Finding the Fourth Proportional to 7,359.60, 11,029.80 and 3,410.40

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Solution

The fourth proportional to 7,359.60, 11,029.80 and 3,410.40 is: 5,111.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,359.60 : 11,029.80 = 3,410.40 : x
  2. Step 2: Convert to fraction form
    7,359.60/11,029.80 = 3,410.40/x
  3. Step 3: Cross multiply
    7,359.60x = 11,029.80 × 3,410.40
  4. Step 4: Simplify right side
    7,359.60x = 37,616,029.92
  5. Step 5: Solve for x
    x = 37,616,029.92/7,359.60
  6. Step 6: Final answer
    x = 5,111.15

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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.