Home / 3,243.60-4,861.80-1,394.40

Finding the Fourth Proportional to 3,243.60, 4,861.80 and 1,394.40

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Solution

The fourth proportional to 3,243.60, 4,861.80 and 1,394.40 is: 2,090.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.60 : 4,861.80 = 1,394.40 : x
  2. Step 2: Convert to fraction form
    3,243.60/4,861.80 = 1,394.40/x
  3. Step 3: Cross multiply
    3,243.60x = 4,861.80 × 1,394.40
  4. Step 4: Simplify right side
    3,243.60x = 6,779,293.92
  5. Step 5: Solve for x
    x = 6,779,293.92/3,243.60
  6. Step 6: Final answer
    x = 2,090.05

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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.