Home / 7,439.42-11,149.33-3,490.06

Finding the Fourth Proportional to 7,439.42, 11,149.33 and 3,490.06

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Solution

The fourth proportional to 7,439.42, 11,149.33 and 3,490.06 is: 5,230.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.42 : 11,149.33 = 3,490.06 : x
  2. Step 2: Convert to fraction form
    7,439.42/11,149.33 = 3,490.06/x
  3. Step 3: Cross multiply
    7,439.42x = 11,149.33 × 3,490.06
  4. Step 4: Simplify right side
    7,439.42x = 38,911,794.06
  5. Step 5: Solve for x
    x = 38,911,794.06/7,439.42
  6. Step 6: Final answer
    x = 5,230.49

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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.