Home / 6,431.07-9,638.91-3,312.57

Finding the Fourth Proportional to 6,431.07, 9,638.91 and 3,312.57

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Solution

The fourth proportional to 6,431.07, 9,638.91 and 3,312.57 is: 4,964.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.07 : 9,638.91 = 3,312.57 : x
  2. Step 2: Convert to fraction form
    6,431.07/9,638.91 = 3,312.57/x
  3. Step 3: Cross multiply
    6,431.07x = 9,638.91 × 3,312.57
  4. Step 4: Simplify right side
    6,431.07x = 31,929,564.10
  5. Step 5: Solve for x
    x = 31,929,564.10/6,431.07
  6. Step 6: Final answer
    x = 4,964.89

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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.