Home / 5,115.96-7,056.72-3,019.68

Finding the Fourth Proportional to 5,115.96, 7,056.72 and 3,019.68

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Solution

The fourth proportional to 5,115.96, 7,056.72 and 3,019.68 is: 4,165.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.96 : 7,056.72 = 3,019.68 : x
  2. Step 2: Convert to fraction form
    5,115.96/7,056.72 = 3,019.68/x
  3. Step 3: Cross multiply
    5,115.96x = 7,056.72 × 3,019.68
  4. Step 4: Simplify right side
    5,115.96x = 21,309,036.25
  5. Step 5: Solve for x
    x = 21,309,036.25/5,115.96
  6. Step 6: Final answer
    x = 4,165.21

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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.