Home / 5,354.30-7,390.78-3,231.02

Finding the Fourth Proportional to 5,354.30, 7,390.78 and 3,231.02

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Solution

The fourth proportional to 5,354.30, 7,390.78 and 3,231.02 is: 4,459.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,354.30 : 7,390.78 = 3,231.02 : x
  2. Step 2: Convert to fraction form
    5,354.30/7,390.78 = 3,231.02/x
  3. Step 3: Cross multiply
    5,354.30x = 7,390.78 × 3,231.02
  4. Step 4: Simplify right side
    5,354.30x = 23,879,758.00
  5. Step 5: Solve for x
    x = 23,879,758.00/5,354.30
  6. Step 6: Final answer
    x = 4,459.92

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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.