Home / 7,431.10-11,140.52-3,480.44

Finding the Fourth Proportional to 7,431.10, 11,140.52 and 3,480.44

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Solution

The fourth proportional to 7,431.10, 11,140.52 and 3,480.44 is: 5,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.10 : 11,140.52 = 3,480.44 : x
  2. Step 2: Convert to fraction form
    7,431.10/11,140.52 = 3,480.44/x
  3. Step 3: Cross multiply
    7,431.10x = 11,140.52 × 3,480.44
  4. Step 4: Simplify right side
    7,431.10x = 38,773,838.32
  5. Step 5: Solve for x
    x = 38,773,838.32/7,431.10
  6. Step 6: Final answer
    x = 5,217.78

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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.