Home / 3,924.02-5,885.97-1,328.78

Finding the Fourth Proportional to 3,924.02, 5,885.97 and 1,328.78

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Solution

The fourth proportional to 3,924.02, 5,885.97 and 1,328.78 is: 1,993.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.02 : 5,885.97 = 1,328.78 : x
  2. Step 2: Convert to fraction form
    3,924.02/5,885.97 = 1,328.78/x
  3. Step 3: Cross multiply
    3,924.02x = 5,885.97 × 1,328.78
  4. Step 4: Simplify right side
    3,924.02x = 7,821,159.22
  5. Step 5: Solve for x
    x = 7,821,159.22/3,924.02
  6. Step 6: Final answer
    x = 1,993.15

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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.