Home / 6,431.90-9,642.67-5,912.91

Finding the Fourth Proportional to 6,431.90, 9,642.67 and 5,912.91

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Solution

The fourth proportional to 6,431.90, 9,642.67 and 5,912.91 is: 8,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.90 : 9,642.67 = 5,912.91 : x
  2. Step 2: Convert to fraction form
    6,431.90/9,642.67 = 5,912.91/x
  3. Step 3: Cross multiply
    6,431.90x = 9,642.67 × 5,912.91
  4. Step 4: Simplify right side
    6,431.90x = 57,016,225.09
  5. Step 5: Solve for x
    x = 57,016,225.09/6,431.90
  6. Step 6: Final answer
    x = 8,864.61

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1.5x scale

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.