Home / 3,989.59-5,984.62-1,216.35

Finding the Fourth Proportional to 3,989.59, 5,984.62 and 1,216.35

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Solution

The fourth proportional to 3,989.59, 5,984.62 and 1,216.35 is: 1,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.59 : 5,984.62 = 1,216.35 : x
  2. Step 2: Convert to fraction form
    3,989.59/5,984.62 = 1,216.35/x
  3. Step 3: Cross multiply
    3,989.59x = 5,984.62 × 1,216.35
  4. Step 4: Simplify right side
    3,989.59x = 7,279,389.50
  5. Step 5: Solve for x
    x = 7,279,389.50/3,989.59
  6. Step 6: Final answer
    x = 1,824.60

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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.