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Finding the Fourth Proportional to 6,887.72, 9,503.48 and 3,902.87

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Solution

The fourth proportional to 6,887.72, 9,503.48 and 3,902.87 is: 5,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,887.72 : 9,503.48 = 3,902.87 : x
  2. Step 2: Convert to fraction form
    6,887.72/9,503.48 = 3,902.87/x
  3. Step 3: Cross multiply
    6,887.72x = 9,503.48 × 3,902.87
  4. Step 4: Simplify right side
    6,887.72x = 37,090,846.99
  5. Step 5: Solve for x
    x = 37,090,846.99/6,887.72
  6. Step 6: Final answer
    x = 5,385.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.