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Finding the Fourth Proportional to 9,907.52, 13,672.64 and 5,716

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Solution

The fourth proportional to 9,907.52, 13,672.64 and 5,716 is: 7,888.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,907.52 : 13,672.64 = 5,716 : x
  2. Step 2: Convert to fraction form
    9,907.52/13,672.64 = 5,716/x
  3. Step 3: Cross multiply
    9,907.52x = 13,672.64 × 5,716
  4. Step 4: Simplify right side
    9,907.52x = 78,152,810.24
  5. Step 5: Solve for x
    x = 78,152,810.24/9,907.52
  6. Step 6: Final answer
    x = 7,888.23

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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.