Home / 2,426.45-3,639.96-782.42

Finding the Fourth Proportional to 2,426.45, 3,639.96 and 782.42

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Solution

The fourth proportional to 2,426.45, 3,639.96 and 782.42 is: 1,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.45 : 3,639.96 = 782.42 : x
  2. Step 2: Convert to fraction form
    2,426.45/3,639.96 = 782.42/x
  3. Step 3: Cross multiply
    2,426.45x = 3,639.96 × 782.42
  4. Step 4: Simplify right side
    2,426.45x = 2,847,959.30
  5. Step 5: Solve for x
    x = 2,847,959.30/2,426.45
  6. Step 6: Final answer
    x = 1,173.72

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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.