Home / 8,680.99-11,979.73-4,702.09

Finding the Fourth Proportional to 8,680.99, 11,979.73 and 4,702.09

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Solution

The fourth proportional to 8,680.99, 11,979.73 and 4,702.09 is: 6,488.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.99 : 11,979.73 = 4,702.09 : x
  2. Step 2: Convert to fraction form
    8,680.99/11,979.73 = 4,702.09/x
  3. Step 3: Cross multiply
    8,680.99x = 11,979.73 × 4,702.09
  4. Step 4: Simplify right side
    8,680.99x = 56,329,768.64
  5. Step 5: Solve for x
    x = 56,329,768.64/8,680.99
  6. Step 6: Final answer
    x = 6,488.86

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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.