Home / 5,109.98-7,048.88-3,218.30

Finding the Fourth Proportional to 5,109.98, 7,048.88 and 3,218.30

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Solution

The fourth proportional to 5,109.98, 7,048.88 and 3,218.30 is: 4,439.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.98 : 7,048.88 = 3,218.30 : x
  2. Step 2: Convert to fraction form
    5,109.98/7,048.88 = 3,218.30/x
  3. Step 3: Cross multiply
    5,109.98x = 7,048.88 × 3,218.30
  4. Step 4: Simplify right side
    5,109.98x = 22,685,412.03
  5. Step 5: Solve for x
    x = 22,685,412.03/5,109.98
  6. Step 6: Final answer
    x = 4,439.44

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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.