Home / 6,979.91-9,630.53-4,146.09

Finding the Fourth Proportional to 6,979.91, 9,630.53 and 4,146.09

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Solution

The fourth proportional to 6,979.91, 9,630.53 and 4,146.09 is: 5,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.91 : 9,630.53 = 4,146.09 : x
  2. Step 2: Convert to fraction form
    6,979.91/9,630.53 = 4,146.09/x
  3. Step 3: Cross multiply
    6,979.91x = 9,630.53 × 4,146.09
  4. Step 4: Simplify right side
    6,979.91x = 39,929,002.83
  5. Step 5: Solve for x
    x = 39,929,002.83/6,979.91
  6. Step 6: Final answer
    x = 5,720.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.