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Finding the Fourth Proportional to 2,477.77, 3,716.64 and 628.87

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Solution

The fourth proportional to 2,477.77, 3,716.64 and 628.87 is: 943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,477.77 : 3,716.64 = 628.87 : x
  2. Step 2: Convert to fraction form
    2,477.77/3,716.64 = 628.87/x
  3. Step 3: Cross multiply
    2,477.77x = 3,716.64 × 628.87
  4. Step 4: Simplify right side
    2,477.77x = 2,337,283.40
  5. Step 5: Solve for x
    x = 2,337,283.40/2,477.77
  6. Step 6: Final answer
    x = 943.30

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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.