Home / 8,680.74-11,979.43-4,701.85

Finding the Fourth Proportional to 8,680.74, 11,979.43 and 4,701.85

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Solution

The fourth proportional to 8,680.74, 11,979.43 and 4,701.85 is: 6,488.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.74 : 11,979.43 = 4,701.85 : x
  2. Step 2: Convert to fraction form
    8,680.74/11,979.43 = 4,701.85/x
  3. Step 3: Cross multiply
    8,680.74x = 11,979.43 × 4,701.85
  4. Step 4: Simplify right side
    8,680.74x = 56,325,482.95
  5. Step 5: Solve for x
    x = 56,325,482.95/8,680.74
  6. Step 6: Final answer
    x = 6,488.56

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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.