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Finding the Fourth Proportional to 8,995.40, 13,493.79 and 2,421.65

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Solution

The fourth proportional to 8,995.40, 13,493.79 and 2,421.65 is: 3,632.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.40 : 13,493.79 = 2,421.65 : x
  2. Step 2: Convert to fraction form
    8,995.40/13,493.79 = 2,421.65/x
  3. Step 3: Cross multiply
    8,995.40x = 13,493.79 × 2,421.65
  4. Step 4: Simplify right side
    8,995.40x = 32,677,194.39
  5. Step 5: Solve for x
    x = 32,677,194.39/8,995.40
  6. Step 6: Final answer
    x = 3,632.65

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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.