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Finding the Fourth Proportional to 8,653.24, 11,941.98 and 5,115.64

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Solution

The fourth proportional to 8,653.24, 11,941.98 and 5,115.64 is: 7,059.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.24 : 11,941.98 = 5,115.64 : x
  2. Step 2: Convert to fraction form
    8,653.24/11,941.98 = 5,115.64/x
  3. Step 3: Cross multiply
    8,653.24x = 11,941.98 × 5,115.64
  4. Step 4: Simplify right side
    8,653.24x = 61,090,870.57
  5. Step 5: Solve for x
    x = 61,090,870.57/8,653.24
  6. Step 6: Final answer
    x = 7,059.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.