Home / 5,211.21-7,191.47-2,853.35

Finding the Fourth Proportional to 5,211.21, 7,191.47 and 2,853.35

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Solution

The fourth proportional to 5,211.21, 7,191.47 and 2,853.35 is: 3,937.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.21 : 7,191.47 = 2,853.35 : x
  2. Step 2: Convert to fraction form
    5,211.21/7,191.47 = 2,853.35/x
  3. Step 3: Cross multiply
    5,211.21x = 7,191.47 × 2,853.35
  4. Step 4: Simplify right side
    5,211.21x = 20,519,795.28
  5. Step 5: Solve for x
    x = 20,519,795.28/5,211.21
  6. Step 6: Final answer
    x = 3,937.63

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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.