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Finding the Fourth Proportional to 8,989.72, 13,485.84 and 3,064.84

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Solution

The fourth proportional to 8,989.72, 13,485.84 and 3,064.84 is: 4,597.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.72 : 13,485.84 = 3,064.84 : x
  2. Step 2: Convert to fraction form
    8,989.72/13,485.84 = 3,064.84/x
  3. Step 3: Cross multiply
    8,989.72x = 13,485.84 × 3,064.84
  4. Step 4: Simplify right side
    8,989.72x = 41,331,941.87
  5. Step 5: Solve for x
    x = 41,331,941.87/8,989.72
  6. Step 6: Final answer
    x = 4,597.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.