Home / 5,211.85-7,192.47-2,854.03

Finding the Fourth Proportional to 5,211.85, 7,192.47 and 2,854.03

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Solution

The fourth proportional to 5,211.85, 7,192.47 and 2,854.03 is: 3,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.85 : 7,192.47 = 2,854.03 : x
  2. Step 2: Convert to fraction form
    5,211.85/7,192.47 = 2,854.03/x
  3. Step 3: Cross multiply
    5,211.85x = 7,192.47 × 2,854.03
  4. Step 4: Simplify right side
    5,211.85x = 20,527,525.15
  5. Step 5: Solve for x
    x = 20,527,525.15/5,211.85
  6. Step 6: Final answer
    x = 3,938.63

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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.