Home / 5,190.64-7,162.43-2,921.70

Finding the Fourth Proportional to 5,190.64, 7,162.43 and 2,921.70

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Solution

The fourth proportional to 5,190.64, 7,162.43 and 2,921.70 is: 4,031.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.64 : 7,162.43 = 2,921.70 : x
  2. Step 2: Convert to fraction form
    5,190.64/7,162.43 = 2,921.70/x
  3. Step 3: Cross multiply
    5,190.64x = 7,162.43 × 2,921.70
  4. Step 4: Simplify right side
    5,190.64x = 20,926,460.13
  5. Step 5: Solve for x
    x = 20,926,460.13/5,190.64
  6. Step 6: Final answer
    x = 4,031.58

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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.