Home / 7,380.40-11,089.72-5,548.78

Finding the Fourth Proportional to 7,380.40, 11,089.72 and 5,548.78

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Solution

The fourth proportional to 7,380.40, 11,089.72 and 5,548.78 is: 8,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,380.40 : 11,089.72 = 5,548.78 : x
  2. Step 2: Convert to fraction form
    7,380.40/11,089.72 = 5,548.78/x
  3. Step 3: Cross multiply
    7,380.40x = 11,089.72 × 5,548.78
  4. Step 4: Simplify right side
    7,380.40x = 61,534,416.54
  5. Step 5: Solve for x
    x = 61,534,416.54/7,380.40
  6. Step 6: Final answer
    x = 8,337.54

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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.