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Finding the Fourth Proportional to 8,012.88, 11,059.74 and 4,871.16

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Solution

The fourth proportional to 8,012.88, 11,059.74 and 4,871.16 is: 6,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.88 : 11,059.74 = 4,871.16 : x
  2. Step 2: Convert to fraction form
    8,012.88/11,059.74 = 4,871.16/x
  3. Step 3: Cross multiply
    8,012.88x = 11,059.74 × 4,871.16
  4. Step 4: Simplify right side
    8,012.88x = 53,873,763.10
  5. Step 5: Solve for x
    x = 53,873,763.10/8,012.88
  6. Step 6: Final answer
    x = 6,723.40

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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.