Home / 3,989.09-5,505.89-2,416.88

Finding the Fourth Proportional to 3,989.09, 5,505.89 and 2,416.88

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Solution

The fourth proportional to 3,989.09, 5,505.89 and 2,416.88 is: 3,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.09 : 5,505.89 = 2,416.88 : x
  2. Step 2: Convert to fraction form
    3,989.09/5,505.89 = 2,416.88/x
  3. Step 3: Cross multiply
    3,989.09x = 5,505.89 × 2,416.88
  4. Step 4: Simplify right side
    3,989.09x = 13,307,075.42
  5. Step 5: Solve for x
    x = 13,307,075.42/3,989.09
  6. Step 6: Final answer
    x = 3,335.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.