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Finding the Fourth Proportional to 8,614.54, 12,904.80 and 6,756.40

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Solution

The fourth proportional to 8,614.54, 12,904.80 and 6,756.40 is: 10,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,614.54 : 12,904.80 = 6,756.40 : x
  2. Step 2: Convert to fraction form
    8,614.54/12,904.80 = 6,756.40/x
  3. Step 3: Cross multiply
    8,614.54x = 12,904.80 × 6,756.40
  4. Step 4: Simplify right side
    8,614.54x = 87,189,990.72
  5. Step 5: Solve for x
    x = 87,189,990.72/8,614.54
  6. Step 6: Final answer
    x = 10,121.26

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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.