Home / 5,211.69-7,192.13-2,853.88

Finding the Fourth Proportional to 5,211.69, 7,192.13 and 2,853.88

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Solution

The fourth proportional to 5,211.69, 7,192.13 and 2,853.88 is: 3,938.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.69 : 7,192.13 = 2,853.88 : x
  2. Step 2: Convert to fraction form
    5,211.69/7,192.13 = 2,853.88/x
  3. Step 3: Cross multiply
    5,211.69x = 7,192.13 × 2,853.88
  4. Step 4: Simplify right side
    5,211.69x = 20,525,475.96
  5. Step 5: Solve for x
    x = 20,525,475.96/5,211.69
  6. Step 6: Final answer
    x = 3,938.35

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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.