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Finding the Fourth Proportional to 8,670.60, 12,980.37 and 5,373.09

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Solution

The fourth proportional to 8,670.60, 12,980.37 and 5,373.09 is: 8,043.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.60 : 12,980.37 = 5,373.09 : x
  2. Step 2: Convert to fraction form
    8,670.60/12,980.37 = 5,373.09/x
  3. Step 3: Cross multiply
    8,670.60x = 12,980.37 × 5,373.09
  4. Step 4: Simplify right side
    8,670.60x = 69,744,696.24
  5. Step 5: Solve for x
    x = 69,744,696.24/8,670.60
  6. Step 6: Final answer
    x = 8,043.81

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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.