Home / 7,390.60-10,198.30-5,157.28

Finding the Fourth Proportional to 7,390.60, 10,198.30 and 5,157.28

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Solution

The fourth proportional to 7,390.60, 10,198.30 and 5,157.28 is: 7,116.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.60 : 10,198.30 = 5,157.28 : x
  2. Step 2: Convert to fraction form
    7,390.60/10,198.30 = 5,157.28/x
  3. Step 3: Cross multiply
    7,390.60x = 10,198.30 × 5,157.28
  4. Step 4: Simplify right side
    7,390.60x = 52,595,488.62
  5. Step 5: Solve for x
    x = 52,595,488.62/7,390.60
  6. Step 6: Final answer
    x = 7,116.54

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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.