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Finding the Fourth Proportional to 8,638.58, 11,924.92 and 5,807.60

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Solution

The fourth proportional to 8,638.58, 11,924.92 and 5,807.60 is: 8,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.58 : 11,924.92 = 5,807.60 : x
  2. Step 2: Convert to fraction form
    8,638.58/11,924.92 = 5,807.60/x
  3. Step 3: Cross multiply
    8,638.58x = 11,924.92 × 5,807.60
  4. Step 4: Simplify right side
    8,638.58x = 69,255,139.04
  5. Step 5: Solve for x
    x = 69,255,139.04/8,638.58
  6. Step 6: Final answer
    x = 8,016.96

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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.