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Finding the Fourth Proportional to 8,587.67, 11,851.94 and 4,811.45

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Solution

The fourth proportional to 8,587.67, 11,851.94 and 4,811.45 is: 6,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.67 : 11,851.94 = 4,811.45 : x
  2. Step 2: Convert to fraction form
    8,587.67/11,851.94 = 4,811.45/x
  3. Step 3: Cross multiply
    8,587.67x = 11,851.94 × 4,811.45
  4. Step 4: Simplify right side
    8,587.67x = 57,024,992.66
  5. Step 5: Solve for x
    x = 57,024,992.66/8,587.67
  6. Step 6: Final answer
    x = 6,640.33

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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.