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Finding the Fourth Proportional to 8,616.36, 12,916.02 and 3,547.38

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Solution

The fourth proportional to 8,616.36, 12,916.02 and 3,547.38 is: 5,317.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.36 : 12,916.02 = 3,547.38 : x
  2. Step 2: Convert to fraction form
    8,616.36/12,916.02 = 3,547.38/x
  3. Step 3: Cross multiply
    8,616.36x = 12,916.02 × 3,547.38
  4. Step 4: Simplify right side
    8,616.36x = 45,818,031.03
  5. Step 5: Solve for x
    x = 45,818,031.03/8,616.36
  6. Step 6: Final answer
    x = 5,317.56

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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.