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Finding the Fourth Proportional to 8,587.68, 12,880.71 and 2,743.26

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Solution

The fourth proportional to 8,587.68, 12,880.71 and 2,743.26 is: 4,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.68 : 12,880.71 = 2,743.26 : x
  2. Step 2: Convert to fraction form
    8,587.68/12,880.71 = 2,743.26/x
  3. Step 3: Cross multiply
    8,587.68x = 12,880.71 × 2,743.26
  4. Step 4: Simplify right side
    8,587.68x = 35,335,136.51
  5. Step 5: Solve for x
    x = 35,335,136.51/8,587.68
  6. Step 6: Final answer
    x = 4,114.63

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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.