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Finding the Fourth Proportional to 2,887.77, 4,331.32 and 807.94

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Solution

The fourth proportional to 2,887.77, 4,331.32 and 807.94 is: 1,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.77 : 4,331.32 = 807.94 : x
  2. Step 2: Convert to fraction form
    2,887.77/4,331.32 = 807.94/x
  3. Step 3: Cross multiply
    2,887.77x = 4,331.32 × 807.94
  4. Step 4: Simplify right side
    2,887.77x = 3,499,423.85
  5. Step 5: Solve for x
    x = 3,499,423.85/2,887.77
  6. Step 6: Final answer
    x = 1,211.81

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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.