Home / 5,190.60-7,160.99-2,921.42

Finding the Fourth Proportional to 5,190.60, 7,160.99 and 2,921.42

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Solution

The fourth proportional to 5,190.60, 7,160.99 and 2,921.42 is: 4,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.60 : 7,160.99 = 2,921.42 : x
  2. Step 2: Convert to fraction form
    5,190.60/7,160.99 = 2,921.42/x
  3. Step 3: Cross multiply
    5,190.60x = 7,160.99 × 2,921.42
  4. Step 4: Simplify right side
    5,190.60x = 20,920,208.99
  5. Step 5: Solve for x
    x = 20,920,208.99/5,190.60
  6. Step 6: Final answer
    x = 4,030.40

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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.