Home / 5,320.04-7,978.58-3,181.51

Finding the Fourth Proportional to 5,320.04, 7,978.58 and 3,181.51

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Solution

The fourth proportional to 5,320.04, 7,978.58 and 3,181.51 is: 4,771.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.04 : 7,978.58 = 3,181.51 : x
  2. Step 2: Convert to fraction form
    5,320.04/7,978.58 = 3,181.51/x
  3. Step 3: Cross multiply
    5,320.04x = 7,978.58 × 3,181.51
  4. Step 4: Simplify right side
    5,320.04x = 25,383,876.26
  5. Step 5: Solve for x
    x = 25,383,876.26/5,320.04
  6. Step 6: Final answer
    x = 4,771.37

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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.