Home / 8,215.71-11,337.85-4,631.79

Finding the Fourth Proportional to 8,215.71, 11,337.85 and 4,631.79

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Solution

The fourth proportional to 8,215.71, 11,337.85 and 4,631.79 is: 6,391.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.71 : 11,337.85 = 4,631.79 : x
  2. Step 2: Convert to fraction form
    8,215.71/11,337.85 = 4,631.79/x
  3. Step 3: Cross multiply
    8,215.71x = 11,337.85 × 4,631.79
  4. Step 4: Simplify right side
    8,215.71x = 52,514,540.25
  5. Step 5: Solve for x
    x = 52,514,540.25/8,215.71
  6. Step 6: Final answer
    x = 6,391.97

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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.