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Finding the Fourth Proportional to 4,255, 5,871.91 and 2,487.58

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Solution

The fourth proportional to 4,255, 5,871.91 and 2,487.58 is: 3,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,255 : 5,871.91 = 2,487.58 : x
  2. Step 2: Convert to fraction form
    4,255/5,871.91 = 2,487.58/x
  3. Step 3: Cross multiply
    4,255x = 5,871.91 × 2,487.58
  4. Step 4: Simplify right side
    4,255x = 14,606,845.88
  5. Step 5: Solve for x
    x = 14,606,845.88/4,255
  6. Step 6: Final answer
    x = 3,432.87

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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.