Home / 5,118.77-7,063.90-2,880.65

Finding the Fourth Proportional to 5,118.77, 7,063.90 and 2,880.65

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Solution

The fourth proportional to 5,118.77, 7,063.90 and 2,880.65 is: 3,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.77 : 7,063.90 = 2,880.65 : x
  2. Step 2: Convert to fraction form
    5,118.77/7,063.90 = 2,880.65/x
  3. Step 3: Cross multiply
    5,118.77x = 7,063.90 × 2,880.65
  4. Step 4: Simplify right side
    5,118.77x = 20,348,633.99
  5. Step 5: Solve for x
    x = 20,348,633.99/5,118.77
  6. Step 6: Final answer
    x = 3,975.30

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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.