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Finding the Fourth Proportional to 9,160.99, 13,731.05 and 5,455.39

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Solution

The fourth proportional to 9,160.99, 13,731.05 and 5,455.39 is: 8,176.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.99 : 13,731.05 = 5,455.39 : x
  2. Step 2: Convert to fraction form
    9,160.99/13,731.05 = 5,455.39/x
  3. Step 3: Cross multiply
    9,160.99x = 13,731.05 × 5,455.39
  4. Step 4: Simplify right side
    9,160.99x = 74,908,232.86
  5. Step 5: Solve for x
    x = 74,908,232.86/9,160.99
  6. Step 6: Final answer
    x = 8,176.87

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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.