Home / 3,890.24-5,364.24-3,388.40

Finding the Fourth Proportional to 3,890.24, 5,364.24 and 3,388.40

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Solution

The fourth proportional to 3,890.24, 5,364.24 and 3,388.40 is: 4,672.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.24 : 5,364.24 = 3,388.40 : x
  2. Step 2: Convert to fraction form
    3,890.24/5,364.24 = 3,388.40/x
  3. Step 3: Cross multiply
    3,890.24x = 5,364.24 × 3,388.40
  4. Step 4: Simplify right side
    3,890.24x = 18,176,190.82
  5. Step 5: Solve for x
    x = 18,176,190.82/3,890.24
  6. Step 6: Final answer
    x = 4,672.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.