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Finding the Fourth Proportional to 8,602.54, 12,903.78 and 5,680.15

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Solution

The fourth proportional to 8,602.54, 12,903.78 and 5,680.15 is: 8,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.54 : 12,903.78 = 5,680.15 : x
  2. Step 2: Convert to fraction form
    8,602.54/12,903.78 = 5,680.15/x
  3. Step 3: Cross multiply
    8,602.54x = 12,903.78 × 5,680.15
  4. Step 4: Simplify right side
    8,602.54x = 73,295,405.97
  5. Step 5: Solve for x
    x = 73,295,405.97/8,602.54
  6. Step 6: Final answer
    x = 8,520.21

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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.