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Finding the Fourth Proportional to 8,907.52, 12,288.88 and 5,371.08

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Solution

The fourth proportional to 8,907.52, 12,288.88 and 5,371.08 is: 7,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.52 : 12,288.88 = 5,371.08 : x
  2. Step 2: Convert to fraction form
    8,907.52/12,288.88 = 5,371.08/x
  3. Step 3: Cross multiply
    8,907.52x = 12,288.88 × 5,371.08
  4. Step 4: Simplify right side
    8,907.52x = 66,004,557.59
  5. Step 5: Solve for x
    x = 66,004,557.59/8,907.52
  6. Step 6: Final answer
    x = 7,409.98

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1.5x scale

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.