Home / 2,165.28-3,242.46-1,432.64

Finding the Fourth Proportional to 2,165.28, 3,242.46 and 1,432.64

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Solution

The fourth proportional to 2,165.28, 3,242.46 and 1,432.64 is: 2,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.28 : 3,242.46 = 1,432.64 : x
  2. Step 2: Convert to fraction form
    2,165.28/3,242.46 = 1,432.64/x
  3. Step 3: Cross multiply
    2,165.28x = 3,242.46 × 1,432.64
  4. Step 4: Simplify right side
    2,165.28x = 4,645,277.89
  5. Step 5: Solve for x
    x = 4,645,277.89/2,165.28
  6. Step 6: Final answer
    x = 2,145.35

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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.