Home / 7,484.20-11,223.60-3,785.20

Finding the Fourth Proportional to 7,484.20, 11,223.60 and 3,785.20

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Solution

The fourth proportional to 7,484.20, 11,223.60 and 3,785.20 is: 5,676.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,484.20 : 11,223.60 = 3,785.20 : x
  2. Step 2: Convert to fraction form
    7,484.20/11,223.60 = 3,785.20/x
  3. Step 3: Cross multiply
    7,484.20x = 11,223.60 × 3,785.20
  4. Step 4: Simplify right side
    7,484.20x = 42,483,570.72
  5. Step 5: Solve for x
    x = 42,483,570.72/7,484.20
  6. Step 6: Final answer
    x = 5,676.43

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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.