Home / 3,459.12-5,188.68-2,688

Finding the Fourth Proportional to 3,459.12, 5,188.68 and 2,688

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Solution

The fourth proportional to 3,459.12, 5,188.68 and 2,688 is: 4,032

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.12 : 5,188.68 = 2,688 : x
  2. Step 2: Convert to fraction form
    3,459.12/5,188.68 = 2,688/x
  3. Step 3: Cross multiply
    3,459.12x = 5,188.68 × 2,688
  4. Step 4: Simplify right side
    3,459.12x = 13,947,171.84
  5. Step 5: Solve for x
    x = 13,947,171.84/3,459.12
  6. Step 6: Final answer
    x = 4,032

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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.