Home / 7,438.40-11,157.60-2,245.76

Finding the Fourth Proportional to 7,438.40, 11,157.60 and 2,245.76

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Solution

The fourth proportional to 7,438.40, 11,157.60 and 2,245.76 is: 3,368.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,438.40 : 11,157.60 = 2,245.76 : x
  2. Step 2: Convert to fraction form
    7,438.40/11,157.60 = 2,245.76/x
  3. Step 3: Cross multiply
    7,438.40x = 11,157.60 × 2,245.76
  4. Step 4: Simplify right side
    7,438.40x = 25,057,291.78
  5. Step 5: Solve for x
    x = 25,057,291.78/7,438.40
  6. Step 6: Final answer
    x = 3,368.64

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.