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Finding the Fourth Proportional to 8,989.55, 13,484.40 and 2,749.68

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Solution

The fourth proportional to 8,989.55, 13,484.40 and 2,749.68 is: 4,124.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.55 : 13,484.40 = 2,749.68 : x
  2. Step 2: Convert to fraction form
    8,989.55/13,484.40 = 2,749.68/x
  3. Step 3: Cross multiply
    8,989.55x = 13,484.40 × 2,749.68
  4. Step 4: Simplify right side
    8,989.55x = 37,077,724.11
  5. Step 5: Solve for x
    x = 37,077,724.11/8,989.55
  6. Step 6: Final answer
    x = 4,124.54

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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.