Home / 8,680.45-11,979.10-4,701.64

Finding the Fourth Proportional to 8,680.45, 11,979.10 and 4,701.64

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Solution

The fourth proportional to 8,680.45, 11,979.10 and 4,701.64 is: 6,488.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.45 : 11,979.10 = 4,701.64 : x
  2. Step 2: Convert to fraction form
    8,680.45/11,979.10 = 4,701.64/x
  3. Step 3: Cross multiply
    8,680.45x = 11,979.10 × 4,701.64
  4. Step 4: Simplify right side
    8,680.45x = 56,321,415.72
  5. Step 5: Solve for x
    x = 56,321,415.72/8,680.45
  6. Step 6: Final answer
    x = 6,488.31

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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.