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Finding the Fourth Proportional to 7,887.70, 11,761.07 and 7,603.12

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Solution

The fourth proportional to 7,887.70, 11,761.07 and 7,603.12 is: 11,336.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.70 : 11,761.07 = 7,603.12 : x
  2. Step 2: Convert to fraction form
    7,887.70/11,761.07 = 7,603.12/x
  3. Step 3: Cross multiply
    7,887.70x = 11,761.07 × 7,603.12
  4. Step 4: Simplify right side
    7,887.70x = 89,420,826.54
  5. Step 5: Solve for x
    x = 89,420,826.54/7,887.70
  6. Step 6: Final answer
    x = 11,336.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.