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Finding the Fourth Proportional to 8,445, 11,654.10 and 4,719

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Solution

The fourth proportional to 8,445, 11,654.10 and 4,719 is: 6,512.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445 : 11,654.10 = 4,719 : x
  2. Step 2: Convert to fraction form
    8,445/11,654.10 = 4,719/x
  3. Step 3: Cross multiply
    8,445x = 11,654.10 × 4,719
  4. Step 4: Simplify right side
    8,445x = 54,995,697.90
  5. Step 5: Solve for x
    x = 54,995,697.90/8,445
  6. Step 6: Final answer
    x = 6,512.22

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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.