Home / 5,122.68-7,069.24-2,884.58

Finding the Fourth Proportional to 5,122.68, 7,069.24 and 2,884.58

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Solution

The fourth proportional to 5,122.68, 7,069.24 and 2,884.58 is: 3,980.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.68 : 7,069.24 = 2,884.58 : x
  2. Step 2: Convert to fraction form
    5,122.68/7,069.24 = 2,884.58/x
  3. Step 3: Cross multiply
    5,122.68x = 7,069.24 × 2,884.58
  4. Step 4: Simplify right side
    5,122.68x = 20,391,788.32
  5. Step 5: Solve for x
    x = 20,391,788.32/5,122.68
  6. Step 6: Final answer
    x = 3,980.69

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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.