Home / 3,459.60-5,189.40-1,269.90

Finding the Fourth Proportional to 3,459.60, 5,189.40 and 1,269.90

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Solution

The fourth proportional to 3,459.60, 5,189.40 and 1,269.90 is: 1,904.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.60 : 5,189.40 = 1,269.90 : x
  2. Step 2: Convert to fraction form
    3,459.60/5,189.40 = 1,269.90/x
  3. Step 3: Cross multiply
    3,459.60x = 5,189.40 × 1,269.90
  4. Step 4: Simplify right side
    3,459.60x = 6,590,019.06
  5. Step 5: Solve for x
    x = 6,590,019.06/3,459.60
  6. Step 6: Final answer
    x = 1,904.85

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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.