Home / 7,340.90-11,021.40-3,785.54

Finding the Fourth Proportional to 7,340.90, 11,021.40 and 3,785.54

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Solution

The fourth proportional to 7,340.90, 11,021.40 and 3,785.54 is: 5,683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.90 : 11,021.40 = 3,785.54 : x
  2. Step 2: Convert to fraction form
    7,340.90/11,021.40 = 3,785.54/x
  3. Step 3: Cross multiply
    7,340.90x = 11,021.40 × 3,785.54
  4. Step 4: Simplify right side
    7,340.90x = 41,721,895.45
  5. Step 5: Solve for x
    x = 41,721,895.45/7,340.90
  6. Step 6: Final answer
    x = 5,683.49

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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.