Home / 3,438.56-5,153.78-1,486.64

Finding the Fourth Proportional to 3,438.56, 5,153.78 and 1,486.64

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Solution

The fourth proportional to 3,438.56, 5,153.78 and 1,486.64 is: 2,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.56 : 5,153.78 = 1,486.64 : x
  2. Step 2: Convert to fraction form
    3,438.56/5,153.78 = 1,486.64/x
  3. Step 3: Cross multiply
    3,438.56x = 5,153.78 × 1,486.64
  4. Step 4: Simplify right side
    3,438.56x = 7,661,815.50
  5. Step 5: Solve for x
    x = 7,661,815.50/3,438.56
  6. Step 6: Final answer
    x = 2,228.20

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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.