Home / 8,742.56-12,069.64-6,694.60

Finding the Fourth Proportional to 8,742.56, 12,069.64 and 6,694.60

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Solution

The fourth proportional to 8,742.56, 12,069.64 and 6,694.60 is: 9,242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.56 : 12,069.64 = 6,694.60 : x
  2. Step 2: Convert to fraction form
    8,742.56/12,069.64 = 6,694.60/x
  3. Step 3: Cross multiply
    8,742.56x = 12,069.64 × 6,694.60
  4. Step 4: Simplify right side
    8,742.56x = 80,801,411.94
  5. Step 5: Solve for x
    x = 80,801,411.94/8,742.56
  6. Step 6: Final answer
    x = 9,242.31

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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.