Home / 2,923.80-4,380.90-2,434.20

Finding the Fourth Proportional to 2,923.80, 4,380.90 and 2,434.20

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Solution

The fourth proportional to 2,923.80, 4,380.90 and 2,434.20 is: 3,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.80 : 4,380.90 = 2,434.20 : x
  2. Step 2: Convert to fraction form
    2,923.80/4,380.90 = 2,434.20/x
  3. Step 3: Cross multiply
    2,923.80x = 4,380.90 × 2,434.20
  4. Step 4: Simplify right side
    2,923.80x = 10,663,986.78
  5. Step 5: Solve for x
    x = 10,663,986.78/2,923.80
  6. Step 6: Final answer
    x = 3,647.30

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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.