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Finding the Fourth Proportional to 3,486, 5,230.80 and 2,316.81

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Solution

The fourth proportional to 3,486, 5,230.80 and 2,316.81 is: 3,476.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486 : 5,230.80 = 2,316.81 : x
  2. Step 2: Convert to fraction form
    3,486/5,230.80 = 2,316.81/x
  3. Step 3: Cross multiply
    3,486x = 5,230.80 × 2,316.81
  4. Step 4: Simplify right side
    3,486x = 12,118,769.75
  5. Step 5: Solve for x
    x = 12,118,769.75/3,486
  6. Step 6: Final answer
    x = 3,476.41

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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.