Home / 5,211.88-7,187.72-3,445.28

Finding the Fourth Proportional to 5,211.88, 7,187.72 and 3,445.28

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Solution

The fourth proportional to 5,211.88, 7,187.72 and 3,445.28 is: 4,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.88 : 7,187.72 = 3,445.28 : x
  2. Step 2: Convert to fraction form
    5,211.88/7,187.72 = 3,445.28/x
  3. Step 3: Cross multiply
    5,211.88x = 7,187.72 × 3,445.28
  4. Step 4: Simplify right side
    5,211.88x = 24,763,707.96
  5. Step 5: Solve for x
    x = 24,763,707.96/5,211.88
  6. Step 6: Final answer
    x = 4,751.40

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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.