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Finding the Fourth Proportional to 8,398.68, 12,588.80 and 3,465.65

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Solution

The fourth proportional to 8,398.68, 12,588.80 and 3,465.65 is: 5,194.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,398.68 : 12,588.80 = 3,465.65 : x
  2. Step 2: Convert to fraction form
    8,398.68/12,588.80 = 3,465.65/x
  3. Step 3: Cross multiply
    8,398.68x = 12,588.80 × 3,465.65
  4. Step 4: Simplify right side
    8,398.68x = 43,628,294.45
  5. Step 5: Solve for x
    x = 43,628,294.45/8,398.68
  6. Step 6: Final answer
    x = 5,194.66

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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.