Home / 5,122.77-7,069.32-2,884.61

Finding the Fourth Proportional to 5,122.77, 7,069.32 and 2,884.61

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Solution

The fourth proportional to 5,122.77, 7,069.32 and 2,884.61 is: 3,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.77 : 7,069.32 = 2,884.61 : x
  2. Step 2: Convert to fraction form
    5,122.77/7,069.32 = 2,884.61/x
  3. Step 3: Cross multiply
    5,122.77x = 7,069.32 × 2,884.61
  4. Step 4: Simplify right side
    5,122.77x = 20,392,195.82
  5. Step 5: Solve for x
    x = 20,392,195.82/5,122.77
  6. Step 6: Final answer
    x = 3,980.70

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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.