Home / 8,781.21-13,173.93-3,587.09

Finding the Fourth Proportional to 8,781.21, 13,173.93 and 3,587.09

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Solution

The fourth proportional to 8,781.21, 13,173.93 and 3,587.09 is: 5,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.21 : 13,173.93 = 3,587.09 : x
  2. Step 2: Convert to fraction form
    8,781.21/13,173.93 = 3,587.09/x
  3. Step 3: Cross multiply
    8,781.21x = 13,173.93 × 3,587.09
  4. Step 4: Simplify right side
    8,781.21x = 47,256,006.69
  5. Step 5: Solve for x
    x = 47,256,006.69/8,781.21
  6. Step 6: Final answer
    x = 5,381.49

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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.