Home / 2,445.28-3,665.04-1,289.44

Finding the Fourth Proportional to 2,445.28, 3,665.04 and 1,289.44

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Solution

The fourth proportional to 2,445.28, 3,665.04 and 1,289.44 is: 1,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.28 : 3,665.04 = 1,289.44 : x
  2. Step 2: Convert to fraction form
    2,445.28/3,665.04 = 1,289.44/x
  3. Step 3: Cross multiply
    2,445.28x = 3,665.04 × 1,289.44
  4. Step 4: Simplify right side
    2,445.28x = 4,725,849.18
  5. Step 5: Solve for x
    x = 4,725,849.18/2,445.28
  6. Step 6: Final answer
    x = 1,932.64

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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.