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Finding the Fourth Proportional to 8,615.94, 12,916.40 and 3,347.34

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Solution

The fourth proportional to 8,615.94, 12,916.40 and 3,347.34 is: 5,018.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.94 : 12,916.40 = 3,347.34 : x
  2. Step 2: Convert to fraction form
    8,615.94/12,916.40 = 3,347.34/x
  3. Step 3: Cross multiply
    8,615.94x = 12,916.40 × 3,347.34
  4. Step 4: Simplify right side
    8,615.94x = 43,235,565.64
  5. Step 5: Solve for x
    x = 43,235,565.64/8,615.94
  6. Step 6: Final answer
    x = 5,018.09

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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.