Home / 4,972.77-6,860.12-2,979.86

Finding the Fourth Proportional to 4,972.77, 6,860.12 and 2,979.86

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Solution

The fourth proportional to 4,972.77, 6,860.12 and 2,979.86 is: 4,110.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.77 : 6,860.12 = 2,979.86 : x
  2. Step 2: Convert to fraction form
    4,972.77/6,860.12 = 2,979.86/x
  3. Step 3: Cross multiply
    4,972.77x = 6,860.12 × 2,979.86
  4. Step 4: Simplify right side
    4,972.77x = 20,442,214.25
  5. Step 5: Solve for x
    x = 20,442,214.25/4,972.77
  6. Step 6: Final answer
    x = 4,110.83

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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.