Home / 1,924.02-2,884.21-690.80

Finding the Fourth Proportional to 1,924.02, 2,884.21 and 690.80

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Solution

The fourth proportional to 1,924.02, 2,884.21 and 690.80 is: 1,035.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,924.02 : 2,884.21 = 690.80 : x
  2. Step 2: Convert to fraction form
    1,924.02/2,884.21 = 690.80/x
  3. Step 3: Cross multiply
    1,924.02x = 2,884.21 × 690.80
  4. Step 4: Simplify right side
    1,924.02x = 1,992,396.12
  5. Step 5: Solve for x
    x = 1,992,396.12/1,924.02
  6. Step 6: Final answer
    x = 1,035.54

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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.