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Finding the Fourth Proportional to 8,151.04, 11,238.40 and 6,740.40

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Solution

The fourth proportional to 8,151.04, 11,238.40 and 6,740.40 is: 9,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.04 : 11,238.40 = 6,740.40 : x
  2. Step 2: Convert to fraction form
    8,151.04/11,238.40 = 6,740.40/x
  3. Step 3: Cross multiply
    8,151.04x = 11,238.40 × 6,740.40
  4. Step 4: Simplify right side
    8,151.04x = 75,751,311.36
  5. Step 5: Solve for x
    x = 75,751,311.36/8,151.04
  6. Step 6: Final answer
    x = 9,293.45

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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.