Home / 5,190.67-7,111.96-5,121.42

Finding the Fourth Proportional to 5,190.67, 7,111.96 and 5,121.42

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Solution

The fourth proportional to 5,190.67, 7,111.96 and 5,121.42 is: 7,017.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.67 : 7,111.96 = 5,121.42 : x
  2. Step 2: Convert to fraction form
    5,190.67/7,111.96 = 5,121.42/x
  3. Step 3: Cross multiply
    5,190.67x = 7,111.96 × 5,121.42
  4. Step 4: Simplify right side
    5,190.67x = 36,423,334.18
  5. Step 5: Solve for x
    x = 36,423,334.18/5,190.67
  6. Step 6: Final answer
    x = 7,017.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.