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Finding the Fourth Proportional to 28,862.72, 43,288.32 and 8,080.64

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Solution

The fourth proportional to 28,862.72, 43,288.32 and 8,080.64 is: 12,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.72 : 43,288.32 = 8,080.64 : x
  2. Step 2: Convert to fraction form
    28,862.72/43,288.32 = 8,080.64/x
  3. Step 3: Cross multiply
    28,862.72x = 43,288.32 × 8,080.64
  4. Step 4: Simplify right side
    28,862.72x = 349,797,330.12
  5. Step 5: Solve for x
    x = 349,797,330.12/28,862.72
  6. Step 6: Final answer
    x = 12,119.35

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1.5x scale

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.