Home / 8,717.44-12,027.36-4,990.72

Finding the Fourth Proportional to 8,717.44, 12,027.36 and 4,990.72

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Solution

The fourth proportional to 8,717.44, 12,027.36 and 4,990.72 is: 6,885.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.44 : 12,027.36 = 4,990.72 : x
  2. Step 2: Convert to fraction form
    8,717.44/12,027.36 = 4,990.72/x
  3. Step 3: Cross multiply
    8,717.44x = 12,027.36 × 4,990.72
  4. Step 4: Simplify right side
    8,717.44x = 60,025,186.10
  5. Step 5: Solve for x
    x = 60,025,186.10/8,717.44
  6. Step 6: Final answer
    x = 6,885.64

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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.