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Finding the Fourth Proportional to 3,555.77, 5,333.24 and 958.91

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Solution

The fourth proportional to 3,555.77, 5,333.24 and 958.91 is: 1,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.77 : 5,333.24 = 958.91 : x
  2. Step 2: Convert to fraction form
    3,555.77/5,333.24 = 958.91/x
  3. Step 3: Cross multiply
    3,555.77x = 5,333.24 × 958.91
  4. Step 4: Simplify right side
    3,555.77x = 5,114,072.90
  5. Step 5: Solve for x
    x = 5,114,072.90/3,555.77
  6. Step 6: Final answer
    x = 1,438.25

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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.