Home / 8,889.30-12,268.96-5,115.02

Finding the Fourth Proportional to 8,889.30, 12,268.96 and 5,115.02

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Solution

The fourth proportional to 8,889.30, 12,268.96 and 5,115.02 is: 7,059.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.30 : 12,268.96 = 5,115.02 : x
  2. Step 2: Convert to fraction form
    8,889.30/12,268.96 = 5,115.02/x
  3. Step 3: Cross multiply
    8,889.30x = 12,268.96 × 5,115.02
  4. Step 4: Simplify right side
    8,889.30x = 62,755,975.78
  5. Step 5: Solve for x
    x = 62,755,975.78/8,889.30
  6. Step 6: Final answer
    x = 7,059.72

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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.