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Finding the Fourth Proportional to 8,898.96, 12,282.44 and 5,122.64

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Solution

The fourth proportional to 8,898.96, 12,282.44 and 5,122.64 is: 7,070.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.96 : 12,282.44 = 5,122.64 : x
  2. Step 2: Convert to fraction form
    8,898.96/12,282.44 = 5,122.64/x
  3. Step 3: Cross multiply
    8,898.96x = 12,282.44 × 5,122.64
  4. Step 4: Simplify right side
    8,898.96x = 62,918,518.44
  5. Step 5: Solve for x
    x = 62,918,518.44/8,898.96
  6. Step 6: Final answer
    x = 7,070.32

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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.