Home / 5,211.13-7,191.37-2,821.10

Finding the Fourth Proportional to 5,211.13, 7,191.37 and 2,821.10

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Solution

The fourth proportional to 5,211.13, 7,191.37 and 2,821.10 is: 3,893.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.13 : 7,191.37 = 2,821.10 : x
  2. Step 2: Convert to fraction form
    5,211.13/7,191.37 = 2,821.10/x
  3. Step 3: Cross multiply
    5,211.13x = 7,191.37 × 2,821.10
  4. Step 4: Simplify right side
    5,211.13x = 20,287,523.84
  5. Step 5: Solve for x
    x = 20,287,523.84/5,211.13
  6. Step 6: Final answer
    x = 3,893.11

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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.