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Finding the Fourth Proportional to 8,811.55, 13,214.15 and 2,570.31

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Solution

The fourth proportional to 8,811.55, 13,214.15 and 2,570.31 is: 3,854.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.55 : 13,214.15 = 2,570.31 : x
  2. Step 2: Convert to fraction form
    8,811.55/13,214.15 = 2,570.31/x
  3. Step 3: Cross multiply
    8,811.55x = 13,214.15 × 2,570.31
  4. Step 4: Simplify right side
    8,811.55x = 33,964,461.89
  5. Step 5: Solve for x
    x = 33,964,461.89/8,811.55
  6. Step 6: Final answer
    x = 3,854.54

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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.