Home / 2,185.64-3,272.70-1,319.40

Finding the Fourth Proportional to 2,185.64, 3,272.70 and 1,319.40

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Solution

The fourth proportional to 2,185.64, 3,272.70 and 1,319.40 is: 1,975.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.64 : 3,272.70 = 1,319.40 : x
  2. Step 2: Convert to fraction form
    2,185.64/3,272.70 = 1,319.40/x
  3. Step 3: Cross multiply
    2,185.64x = 3,272.70 × 1,319.40
  4. Step 4: Simplify right side
    2,185.64x = 4,318,000.38
  5. Step 5: Solve for x
    x = 4,318,000.38/2,185.64
  6. Step 6: Final answer
    x = 1,975.62

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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.