Home / 2,587.42-3,571.43-2,455.15

Finding the Fourth Proportional to 2,587.42, 3,571.43 and 2,455.15

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Solution

The fourth proportional to 2,587.42, 3,571.43 and 2,455.15 is: 3,388.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.42 : 3,571.43 = 2,455.15 : x
  2. Step 2: Convert to fraction form
    2,587.42/3,571.43 = 2,455.15/x
  3. Step 3: Cross multiply
    2,587.42x = 3,571.43 × 2,455.15
  4. Step 4: Simplify right side
    2,587.42x = 8,768,396.36
  5. Step 5: Solve for x
    x = 8,768,396.36/2,587.42
  6. Step 6: Final answer
    x = 3,388.86

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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.