Home / 5,211.77-7,192.25-2,853.90

Finding the Fourth Proportional to 5,211.77, 7,192.25 and 2,853.90

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Solution

The fourth proportional to 5,211.77, 7,192.25 and 2,853.90 is: 3,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.77 : 7,192.25 = 2,853.90 : x
  2. Step 2: Convert to fraction form
    5,211.77/7,192.25 = 2,853.90/x
  3. Step 3: Cross multiply
    5,211.77x = 7,192.25 × 2,853.90
  4. Step 4: Simplify right side
    5,211.77x = 20,525,948.01
  5. Step 5: Solve for x
    x = 20,525,948.01/5,211.77
  6. Step 6: Final answer
    x = 3,938.39

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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.