Home / 3,917.65-5,406.59-2,589.05

Finding the Fourth Proportional to 3,917.65, 5,406.59 and 2,589.05

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Solution

The fourth proportional to 3,917.65, 5,406.59 and 2,589.05 is: 3,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.65 : 5,406.59 = 2,589.05 : x
  2. Step 2: Convert to fraction form
    3,917.65/5,406.59 = 2,589.05/x
  3. Step 3: Cross multiply
    3,917.65x = 5,406.59 × 2,589.05
  4. Step 4: Simplify right side
    3,917.65x = 13,997,911.28
  5. Step 5: Solve for x
    x = 13,997,911.28/3,917.65
  6. Step 6: Final answer
    x = 3,573.04

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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.