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Finding the Fourth Proportional to 8,621.52, 11,898 and 5,477.64

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Solution

The fourth proportional to 8,621.52, 11,898 and 5,477.64 is: 7,559.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.52 : 11,898 = 5,477.64 : x
  2. Step 2: Convert to fraction form
    8,621.52/11,898 = 5,477.64/x
  3. Step 3: Cross multiply
    8,621.52x = 11,898 × 5,477.64
  4. Step 4: Simplify right side
    8,621.52x = 65,172,960.72
  5. Step 5: Solve for x
    x = 65,172,960.72/8,621.52
  6. Step 6: Final answer
    x = 7,559.34

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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.