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Finding the Fourth Proportional to 9,898.32, 13,659.60 and 5,919.24

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Solution

The fourth proportional to 9,898.32, 13,659.60 and 5,919.24 is: 8,168.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,898.32 : 13,659.60 = 5,919.24 : x
  2. Step 2: Convert to fraction form
    9,898.32/13,659.60 = 5,919.24/x
  3. Step 3: Cross multiply
    9,898.32x = 13,659.60 × 5,919.24
  4. Step 4: Simplify right side
    9,898.32x = 80,854,450.70
  5. Step 5: Solve for x
    x = 80,854,450.70/9,898.32
  6. Step 6: Final answer
    x = 8,168.50

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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.