Home / 5,187.72-7,781.58-1,725.24

Finding the Fourth Proportional to 5,187.72, 7,781.58 and 1,725.24

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Solution

The fourth proportional to 5,187.72, 7,781.58 and 1,725.24 is: 2,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.72 : 7,781.58 = 1,725.24 : x
  2. Step 2: Convert to fraction form
    5,187.72/7,781.58 = 1,725.24/x
  3. Step 3: Cross multiply
    5,187.72x = 7,781.58 × 1,725.24
  4. Step 4: Simplify right side
    5,187.72x = 13,425,093.08
  5. Step 5: Solve for x
    x = 13,425,093.08/5,187.72
  6. Step 6: Final answer
    x = 2,587.86

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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.