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Finding the Fourth Proportional to 8,902.58, 13,256.28 and 8,587.26

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Solution

The fourth proportional to 8,902.58, 13,256.28 and 8,587.26 is: 12,786.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.58 : 13,256.28 = 8,587.26 : x
  2. Step 2: Convert to fraction form
    8,902.58/13,256.28 = 8,587.26/x
  3. Step 3: Cross multiply
    8,902.58x = 13,256.28 × 8,587.26
  4. Step 4: Simplify right side
    8,902.58x = 113,835,122.99
  5. Step 5: Solve for x
    x = 113,835,122.99/8,902.58
  6. Step 6: Final answer
    x = 12,786.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.