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Finding the Fourth Proportional to 7,603.89, 11,403.12 and 3,221.67

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Solution

The fourth proportional to 7,603.89, 11,403.12 and 3,221.67 is: 4,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,603.89 : 11,403.12 = 3,221.67 : x
  2. Step 2: Convert to fraction form
    7,603.89/11,403.12 = 3,221.67/x
  3. Step 3: Cross multiply
    7,603.89x = 11,403.12 × 3,221.67
  4. Step 4: Simplify right side
    7,603.89x = 36,737,089.61
  5. Step 5: Solve for x
    x = 36,737,089.61/7,603.89
  6. Step 6: Final answer
    x = 4,831.35

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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.