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Finding the Fourth Proportional to 8,812.99, 12,157.32 and 5,225.86

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Solution

The fourth proportional to 8,812.99, 12,157.32 and 5,225.86 is: 7,208.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.99 : 12,157.32 = 5,225.86 : x
  2. Step 2: Convert to fraction form
    8,812.99/12,157.32 = 5,225.86/x
  3. Step 3: Cross multiply
    8,812.99x = 12,157.32 × 5,225.86
  4. Step 4: Simplify right side
    8,812.99x = 63,532,452.30
  5. Step 5: Solve for x
    x = 63,532,452.30/8,812.99
  6. Step 6: Final answer
    x = 7,208.96

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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.