Home / 5,438.36-8,103.56-5,173.90

Finding the Fourth Proportional to 5,438.36, 8,103.56 and 5,173.90

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Solution

The fourth proportional to 5,438.36, 8,103.56 and 5,173.90 is: 7,709.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.36 : 8,103.56 = 5,173.90 : x
  2. Step 2: Convert to fraction form
    5,438.36/8,103.56 = 5,173.90/x
  3. Step 3: Cross multiply
    5,438.36x = 8,103.56 × 5,173.90
  4. Step 4: Simplify right side
    5,438.36x = 41,926,962.96
  5. Step 5: Solve for x
    x = 41,926,962.96/5,438.36
  6. Step 6: Final answer
    x = 7,709.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.