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Finding the Fourth Proportional to 8,602.40, 12,864.72 and 6,627.68

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Solution

The fourth proportional to 8,602.40, 12,864.72 and 6,627.68 is: 9,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.40 : 12,864.72 = 6,627.68 : x
  2. Step 2: Convert to fraction form
    8,602.40/12,864.72 = 6,627.68/x
  3. Step 3: Cross multiply
    8,602.40x = 12,864.72 × 6,627.68
  4. Step 4: Simplify right side
    8,602.40x = 85,263,247.45
  5. Step 5: Solve for x
    x = 85,263,247.45/8,602.40
  6. Step 6: Final answer
    x = 9,911.57

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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.