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Finding the Fourth Proportional to 2,587.44, 3,571.44 and 2,455.21

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Solution

The fourth proportional to 2,587.44, 3,571.44 and 2,455.21 is: 3,388.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.44 : 3,571.44 = 2,455.21 : x
  2. Step 2: Convert to fraction form
    2,587.44/3,571.44 = 2,455.21/x
  3. Step 3: Cross multiply
    2,587.44x = 3,571.44 × 2,455.21
  4. Step 4: Simplify right side
    2,587.44x = 8,768,644.27
  5. Step 5: Solve for x
    x = 8,768,644.27/2,587.44
  6. Step 6: Final answer
    x = 3,388.92

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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.