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Finding the Fourth Proportional to 8,960.02, 13,419.20 and 8,648.64

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Solution

The fourth proportional to 8,960.02, 13,419.20 and 8,648.64 is: 12,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.02 : 13,419.20 = 8,648.64 : x
  2. Step 2: Convert to fraction form
    8,960.02/13,419.20 = 8,648.64/x
  3. Step 3: Cross multiply
    8,960.02x = 13,419.20 × 8,648.64
  4. Step 4: Simplify right side
    8,960.02x = 116,057,851.51
  5. Step 5: Solve for x
    x = 116,057,851.51/8,960.02
  6. Step 6: Final answer
    x = 12,952.86

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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.