Home / 5,118.20-7,063.08-2,880.10

Finding the Fourth Proportional to 5,118.20, 7,063.08 and 2,880.10

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Solution

The fourth proportional to 5,118.20, 7,063.08 and 2,880.10 is: 3,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.20 : 7,063.08 = 2,880.10 : x
  2. Step 2: Convert to fraction form
    5,118.20/7,063.08 = 2,880.10/x
  3. Step 3: Cross multiply
    5,118.20x = 7,063.08 × 2,880.10
  4. Step 4: Simplify right side
    5,118.20x = 20,342,348.59
  5. Step 5: Solve for x
    x = 20,342,348.59/5,118.20
  6. Step 6: Final answer
    x = 3,974.51

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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.