Home / 5,122.43-7,068.87-2,884.30

Finding the Fourth Proportional to 5,122.43, 7,068.87 and 2,884.30

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Solution

The fourth proportional to 5,122.43, 7,068.87 and 2,884.30 is: 3,980.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.43 : 7,068.87 = 2,884.30 : x
  2. Step 2: Convert to fraction form
    5,122.43/7,068.87 = 2,884.30/x
  3. Step 3: Cross multiply
    5,122.43x = 7,068.87 × 2,884.30
  4. Step 4: Simplify right side
    5,122.43x = 20,388,706.40
  5. Step 5: Solve for x
    x = 20,388,706.40/5,122.43
  6. Step 6: Final answer
    x = 3,980.28

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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.