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Finding the Fourth Proportional to 9,328.80, 13,992.90 and 3,089.10

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Solution

The fourth proportional to 9,328.80, 13,992.90 and 3,089.10 is: 4,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328.80 : 13,992.90 = 3,089.10 : x
  2. Step 2: Convert to fraction form
    9,328.80/13,992.90 = 3,089.10/x
  3. Step 3: Cross multiply
    9,328.80x = 13,992.90 × 3,089.10
  4. Step 4: Simplify right side
    9,328.80x = 43,225,467.39
  5. Step 5: Solve for x
    x = 43,225,467.39/9,328.80
  6. Step 6: Final answer
    x = 4,633.55

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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.