Home / 4,207.72-6,310.84-1,129

Finding the Fourth Proportional to 4,207.72, 6,310.84 and 1,129

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Solution

The fourth proportional to 4,207.72, 6,310.84 and 1,129 is: 1,693.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,207.72 : 6,310.84 = 1,129 : x
  2. Step 2: Convert to fraction form
    4,207.72/6,310.84 = 1,129/x
  3. Step 3: Cross multiply
    4,207.72x = 6,310.84 × 1,129
  4. Step 4: Simplify right side
    4,207.72x = 7,124,938.36
  5. Step 5: Solve for x
    x = 7,124,938.36/4,207.72
  6. Step 6: Final answer
    x = 1,693.30

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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.