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Finding the Fourth Proportional to 8,615.07, 12,913.97 and 7,146.27

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Solution

The fourth proportional to 8,615.07, 12,913.97 and 7,146.27 is: 10,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.07 : 12,913.97 = 7,146.27 : x
  2. Step 2: Convert to fraction form
    8,615.07/12,913.97 = 7,146.27/x
  3. Step 3: Cross multiply
    8,615.07x = 12,913.97 × 7,146.27
  4. Step 4: Simplify right side
    8,615.07x = 92,286,680.66
  5. Step 5: Solve for x
    x = 92,286,680.66/8,615.07
  6. Step 6: Final answer
    x = 10,712.24

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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.