Home / 2,420.46-3,630.78-1,432.80

Finding the Fourth Proportional to 2,420.46, 3,630.78 and 1,432.80

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Solution

The fourth proportional to 2,420.46, 3,630.78 and 1,432.80 is: 2,149.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.46 : 3,630.78 = 1,432.80 : x
  2. Step 2: Convert to fraction form
    2,420.46/3,630.78 = 1,432.80/x
  3. Step 3: Cross multiply
    2,420.46x = 3,630.78 × 1,432.80
  4. Step 4: Simplify right side
    2,420.46x = 5,202,181.58
  5. Step 5: Solve for x
    x = 5,202,181.58/2,420.46
  6. Step 6: Final answer
    x = 2,149.25

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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.