Home / 8,680.56-11,979-4,701.66

Finding the Fourth Proportional to 8,680.56, 11,979 and 4,701.66

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Solution

The fourth proportional to 8,680.56, 11,979 and 4,701.66 is: 6,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.56 : 11,979 = 4,701.66 : x
  2. Step 2: Convert to fraction form
    8,680.56/11,979 = 4,701.66/x
  3. Step 3: Cross multiply
    8,680.56x = 11,979 × 4,701.66
  4. Step 4: Simplify right side
    8,680.56x = 56,321,185.14
  5. Step 5: Solve for x
    x = 56,321,185.14/8,680.56
  6. Step 6: Final answer
    x = 6,488.20

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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.