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Finding the Fourth Proportional to 8,603.69, 12,906.41 and 7,521.12

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Solution

The fourth proportional to 8,603.69, 12,906.41 and 7,521.12 is: 11,282.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.69 : 12,906.41 = 7,521.12 : x
  2. Step 2: Convert to fraction form
    8,603.69/12,906.41 = 7,521.12/x
  3. Step 3: Cross multiply
    8,603.69x = 12,906.41 × 7,521.12
  4. Step 4: Simplify right side
    8,603.69x = 97,070,620.77
  5. Step 5: Solve for x
    x = 97,070,620.77/8,603.69
  6. Step 6: Final answer
    x = 11,282.45

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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.