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Finding the Fourth Proportional to 8,700.08, 13,059.84 and 3,509.60

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Solution

The fourth proportional to 8,700.08, 13,059.84 and 3,509.60 is: 5,268.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.08 : 13,059.84 = 3,509.60 : x
  2. Step 2: Convert to fraction form
    8,700.08/13,059.84 = 3,509.60/x
  3. Step 3: Cross multiply
    8,700.08x = 13,059.84 × 3,509.60
  4. Step 4: Simplify right side
    8,700.08x = 45,834,814.46
  5. Step 5: Solve for x
    x = 45,834,814.46/8,700.08
  6. Step 6: Final answer
    x = 5,268.32

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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.