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Finding the Fourth Proportional to 7,279.61, 10,916.72 and 2,598.36

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Solution

The fourth proportional to 7,279.61, 10,916.72 and 2,598.36 is: 3,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.61 : 10,916.72 = 2,598.36 : x
  2. Step 2: Convert to fraction form
    7,279.61/10,916.72 = 2,598.36/x
  3. Step 3: Cross multiply
    7,279.61x = 10,916.72 × 2,598.36
  4. Step 4: Simplify right side
    7,279.61x = 28,365,616.01
  5. Step 5: Solve for x
    x = 28,365,616.01/7,279.61
  6. Step 6: Final answer
    x = 3,896.59

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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.