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Finding the Fourth Proportional to 8,296.88, 12,445.31 and 2,140.88

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Solution

The fourth proportional to 8,296.88, 12,445.31 and 2,140.88 is: 3,211.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,296.88 : 12,445.31 = 2,140.88 : x
  2. Step 2: Convert to fraction form
    8,296.88/12,445.31 = 2,140.88/x
  3. Step 3: Cross multiply
    8,296.88x = 12,445.31 × 2,140.88
  4. Step 4: Simplify right side
    8,296.88x = 26,643,858.40
  5. Step 5: Solve for x
    x = 26,643,858.40/8,296.88
  6. Step 6: Final answer
    x = 3,211.31

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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.