Home / 8,680.89-11,979.63-4,701.99

Finding the Fourth Proportional to 8,680.89, 11,979.63 and 4,701.99

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Solution

The fourth proportional to 8,680.89, 11,979.63 and 4,701.99 is: 6,488.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.89 : 11,979.63 = 4,701.99 : x
  2. Step 2: Convert to fraction form
    8,680.89/11,979.63 = 4,701.99/x
  3. Step 3: Cross multiply
    8,680.89x = 11,979.63 × 4,701.99
  4. Step 4: Simplify right side
    8,680.89x = 56,328,100.46
  5. Step 5: Solve for x
    x = 56,328,100.46/8,680.89
  6. Step 6: Final answer
    x = 6,488.75

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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.